Grandville weather in September
In September, Grandville sees average daytime highs of 72°F and overnight lows near 54°F, with 3.1 in of rain across 9.3 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.
Highs ease over the month, from about 76°F in the first days to 67°F by the end. The sky is clear or mostly clear about 36% of the time in September, and the air most often feels dry.
Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Grandville's 2nd-clearest and 9th-windiest month. For the whole year in context, see Grandville's year-round climate.
- Daytime high
- 72°
- 4th warmest
- Overnight low
- 54°
- 9th coldest
- Rainfall
- 3.1 in
- 9.3 wet days
- Daylight
- 12 h 18 min
- 6:29 AM – 6:46 PM
- Cloud cover
- 53%
- 2nd clearest
- Wind
- 7 mph
- 9th windiest
- Solar energy
- 4.33 kWh/m²
- Travel score
- 6.8
- out of 10
Grandville is city in Kent County, Michigan, United States.
- Density
- 803/km²
- people per km²
- Founded
- 1933
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs ease over the month, from about 76°F in the first days to 67°F by the end.
A typical September day in Grandville reaches about 72°F in the afternoon and slips back to 54°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 61°F and 82°F. Set against its neighbours, September runs about 7°F cooler than August and about 13°F warmer than October.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 77 | 76 | 76 | 76 | 76 | 75 | 75 | 75 | 74 | 74 | 74 | 73 | 73 | 73 | 72 | 72 | 72 | 71 | 71 | 70 | 70 | 69 | 69 | 69 | 68 | 68 | 67 | 67 | 66 | 66 |
| Avg low (°F) | 59 | 58 | 58 | 58 | 57 | 57 | 57 | 56 | 56 | 56 | 55 | 55 | 55 | 54 | 54 | 54 | 53 | 53 | 53 | 52 | 52 | 51 | 51 | 51 | 50 | 50 | 49 | 49 | 49 | 48 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 77 | 59 |
| 2 | 76 | 58 |
| 3 | 76 | 58 |
| 4 | 76 | 58 |
| 5 | 76 | 57 |
| 6 | 75 | 57 |
| 7 | 75 | 57 |
| 8 | 75 | 56 |
| 9 | 74 | 56 |
| 10 | 74 | 56 |
| 11 | 74 | 55 |
| 12 | 73 | 55 |
| 13 | 73 | 55 |
| 14 | 73 | 54 |
| 15 | 72 | 54 |
| 16 | 72 | 54 |
| 17 | 72 | 53 |
| 18 | 71 | 53 |
| 19 | 71 | 53 |
| 20 | 70 | 52 |
| 21 | 70 | 52 |
| 22 | 69 | 51 |
| 23 | 69 | 51 |
| 24 | 69 | 51 |
| 25 | 68 | 50 |
| 26 | 68 | 50 |
| 27 | 67 | 49 |
| 28 | 67 | 49 |
| 29 | 66 | 49 |
| 30 | 66 | 48 |
How September really feels in Grandville
Once humidity and wind are folded in, September averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Grandville weather by month
How September compares with the rest of the year at a glance. September is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 31° / 19° | 2.4 | 10.5 | 10.1 | 9.2 | 0.0 |
| Feb | 33° / 19° | 1.9 | 8.1 | 6.5 | 10.2 | 0.0 |
| Mar | 44° / 28° | 2.5 | 9.4 | 4 | 11.6 | 0.9 |
| Apr | 57° / 38° | 4.0 | 12.1 | 1.7 | 13.1 | 3.7 |
| May | 68° / 49° | 4.3 | 11.9 | 0 | 14.4 | 6.0 |
| Jun | 77° / 59° | 3.8 | 11.3 | 0 | 15.1 | 6.6 |
| Jul | 81° / 63° | 3.8 | 10.9 | 0 | 14.8 | 6.5 |
| Aug | 79° / 61° | 3.6 | 10.5 | 0 | 13.8 | 6.7 |
| Sep | 72° / 54° | 3.1 | 9.3 | 0 | 12.3 | 6.8 |
| Oct | 59° / 43° | 3.4 | 11.4 | 0.2 | 10.8 | 4.4 |
| Nov | 46° / 34° | 2.7 | 10 | 2.7 | 9.5 | 1.2 |
| Dec | 35° / 25° | 2.3 | 10.8 | 8.1 | 8.9 | 0.0 |
Cloud cover in September
The sky is clear or mostly clear about 36% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 46%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 59 | 60 | 59 | 59 | 59 | 59 | 59 | 57 | 57 | 56 | 55 | 55 | 54 | 54 | 53 | 53 | 52 | 52 | 52 | 51 | 51 | 51 | 51 | 50 | 49 | 49 | 49 | 49 | 49 | 49 |
| Cloudier (%) | 41 | 40 | 41 | 41 | 41 | 41 | 41 | 43 | 43 | 44 | 45 | 45 | 46 | 46 | 47 | 47 | 48 | 48 | 48 | 49 | 49 | 49 | 49 | 50 | 51 | 51 | 51 | 51 | 51 | 51 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 59 | 41 |
| 2 | 60 | 40 |
| 3 | 59 | 41 |
| 4 | 59 | 41 |
| 5 | 59 | 41 |
| 6 | 59 | 41 |
| 7 | 59 | 41 |
| 8 | 57 | 43 |
| 9 | 57 | 43 |
| 10 | 56 | 44 |
| 11 | 55 | 45 |
| 12 | 55 | 45 |
| 13 | 54 | 46 |
| 14 | 54 | 46 |
| 15 | 53 | 47 |
| 16 | 53 | 47 |
| 17 | 52 | 48 |
| 18 | 52 | 48 |
| 19 | 52 | 48 |
| 20 | 51 | 49 |
| 21 | 51 | 49 |
| 22 | 51 | 49 |
| 23 | 51 | 49 |
| 24 | 50 | 50 |
| 25 | 49 | 51 |
| 26 | 49 | 51 |
| 27 | 49 | 51 |
| 28 | 49 | 51 |
| 29 | 49 | 51 |
| 30 | 49 | 51 |
Chance of precipitation in September
Grandville gets around 3.1 in of rain over 9.3 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 32% and peaks near 37% on the wettest days. The odds climb toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 32 | 32 | 33 | 33 | 34 | 35 | 36 | 36 | 37 | 37 | 37 |
| Rain chance (%) | |
|---|---|
| 1 | 30 |
| 2 | 30 |
| 3 | 30 |
| 4 | 30 |
| 5 | 29 |
| 6 | 29 |
| 7 | 29 |
| 8 | 29 |
| 9 | 29 |
| 10 | 29 |
| 11 | 29 |
| 12 | 30 |
| 13 | 30 |
| 14 | 30 |
| 15 | 30 |
| 16 | 30 |
| 17 | 30 |
| 18 | 31 |
| 19 | 31 |
| 20 | 32 |
| 21 | 32 |
| 22 | 33 |
| 23 | 33 |
| 24 | 34 |
| 25 | 35 |
| 26 | 36 |
| 27 | 36 |
| 28 | 37 |
| 29 | 37 |
| 30 | 37 |
Humidity in September
Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the dry band about 56% of days. Sticky, muggy-or-worse air turns up on roughly 9% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 33 | 34 | 36 | 38 | 40 | 41 | 43 | 44 | 46 | 47 | 48 | 50 | 52 | 52 | 54 | 55 | 57 | 60 | 62 | 64 | 66 | 67 | 69 | 71 | 73 | 74 | 76 | 77 | 77 | 79 |
| Comfortable (%) | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 24 | 24 | 24 | 23 | 23 | 23 | 22 | 22 | 22 | 21 | 20 | 20 | 19 | 18 | 18 | 17 | 16 | 16 | 15 | 14 | 14 | 13 |
| Humid (%) | 20 | 20 | 19 | 19 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 16 | 16 | 15 | 15 | 14 | 13 | 12 | 11 | 10 | 10 | 9 | 8 | 7 | 7 | 6 | 6 | 6 | 6 |
| Muggy (%) | 17 | 16 | 15 | 14 | 13 | 12 | 12 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 2 |
| Oppressive (%) | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 33 | 26 | 20 | 17 | 4 |
| 2 | 34 | 26 | 20 | 16 | 4 |
| 3 | 36 | 26 | 19 | 15 | 4 |
| 4 | 38 | 26 | 19 | 14 | 4 |
| 5 | 40 | 26 | 18 | 13 | 3 |
| 6 | 41 | 25 | 18 | 12 | 3 |
| 7 | 43 | 25 | 18 | 12 | 3 |
| 8 | 44 | 25 | 18 | 11 | 2 |
| 9 | 46 | 24 | 17 | 10 | 2 |
| 10 | 47 | 24 | 17 | 10 | 2 |
| 11 | 48 | 24 | 17 | 9 | 2 |
| 12 | 50 | 23 | 17 | 9 | 1 |
| 13 | 52 | 23 | 16 | 8 | 1 |
| 14 | 52 | 23 | 16 | 8 | 1 |
| 15 | 54 | 22 | 15 | 8 | 1 |
| 16 | 55 | 22 | 15 | 7 | 1 |
| 17 | 57 | 22 | 14 | 7 | 0 |
| 18 | 60 | 21 | 13 | 6 | 0 |
| 19 | 62 | 20 | 12 | 6 | 0 |
| 20 | 64 | 20 | 11 | 5 | 0 |
| 21 | 66 | 19 | 10 | 5 | 0 |
| 22 | 67 | 18 | 10 | 5 | 0 |
| 23 | 69 | 18 | 9 | 4 | 0 |
| 24 | 71 | 17 | 8 | 4 | 0 |
| 25 | 73 | 16 | 7 | 4 | 0 |
| 26 | 74 | 16 | 7 | 3 | 0 |
| 27 | 76 | 15 | 6 | 3 | 0 |
| 28 | 77 | 14 | 6 | 3 | 0 |
| 29 | 77 | 14 | 6 | 3 | 0 |
| 30 | 79 | 13 | 6 | 2 | 0 |
Wind in September
Winds average 7 mph in September.
Across September, daily wind ranges from about 6 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 6 | calm |
| 2 | 6 | calm |
| 3 | 6 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | light breeze |
| 27 | 8 | light breeze |
| 28 | 8 | light breeze |
| 29 | 8 | light breeze |
| 30 | 8 | light breeze |
Sunrise & sunset in September
Daylight runs from about 13 hours at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 84 minutes over September. Sunrise moves from 6:12 AM to 6:45 AM, and sunset from 7:14 PM to 6:20 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.0 | 13.0 | 12.9 | 12.9 | 12.8 | 12.8 | 12.7 | 12.7 | 12.6 | 12.6 | 12.5 | 12.5 | 12.4 | 12.4 | 12.3 | 12.3 | 12.2 | 12.2 | 12.1 | 12.1 | 12.0 | 12.0 | 11.9 | 11.9 | 11.8 | 11.8 | 11.7 | 11.7 | 11.6 | 11.6 |
| Sunrise (AM) | 6:12 | 6:13 | 6:14 | 6:15 | 6:16 | 6:18 | 6:19 | 6:20 | 6:21 | 6:22 | 6:23 | 6:24 | 6:25 | 6:27 | 6:28 | 6:29 | 6:30 | 6:31 | 6:32 | 6:33 | 6:34 | 6:36 | 6:37 | 6:38 | 6:39 | 6:40 | 6:41 | 6:42 | 6:44 | 6:45 |
| Sunset (PM) | 7:14 | 7:12 | 7:10 | 7:08 | 7:06 | 7:05 | 7:03 | 7:01 | 6:59 | 6:57 | 6:55 | 6:53 | 6:52 | 6:50 | 6:48 | 6:46 | 6:44 | 6:42 | 6:40 | 6:39 | 6:37 | 6:35 | 6:33 | 6:31 | 6:29 | 6:27 | 6:26 | 6:24 | 6:22 | 6:20 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.0 | 6:12 | 7:14 |
| 2 | 13.0 | 6:13 | 7:12 |
| 3 | 12.9 | 6:14 | 7:10 |
| 4 | 12.9 | 6:15 | 7:08 |
| 5 | 12.8 | 6:16 | 7:06 |
| 6 | 12.8 | 6:18 | 7:05 |
| 7 | 12.7 | 6:19 | 7:03 |
| 8 | 12.7 | 6:20 | 7:01 |
| 9 | 12.6 | 6:21 | 6:59 |
| 10 | 12.6 | 6:22 | 6:57 |
| 11 | 12.5 | 6:23 | 6:55 |
| 12 | 12.5 | 6:24 | 6:53 |
| 13 | 12.4 | 6:25 | 6:52 |
| 14 | 12.4 | 6:27 | 6:50 |
| 15 | 12.3 | 6:28 | 6:48 |
| 16 | 12.3 | 6:29 | 6:46 |
| 17 | 12.2 | 6:30 | 6:44 |
| 18 | 12.2 | 6:31 | 6:42 |
| 19 | 12.1 | 6:32 | 6:40 |
| 20 | 12.1 | 6:33 | 6:39 |
| 21 | 12.0 | 6:34 | 6:37 |
| 22 | 12.0 | 6:36 | 6:35 |
| 23 | 11.9 | 6:37 | 6:33 |
| 24 | 11.9 | 6:38 | 6:31 |
| 25 | 11.8 | 6:39 | 6:29 |
| 26 | 11.8 | 6:40 | 6:27 |
| 27 | 11.7 | 6:41 | 6:26 |
| 28 | 11.7 | 6:42 | 6:24 |
| 29 | 11.6 | 6:44 | 6:22 |
| 30 | 11.6 | 6:45 | 6:20 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.33 kWh/m².
For context, solar energy here swings from a low near 1.3 kWh/m² to a high of 6.53 kWh/m² in June across the year — September's 4.33 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.0 | 4.9 | 4.9 | 4.8 | 4.8 | 4.8 | 4.7 | 4.7 | 4.6 | 4.6 | 4.5 | 4.5 | 4.4 | 4.4 | 4.3 | 4.3 | 4.2 | 4.2 | 4.1 | 4.1 | 4.0 | 4.0 | 4.0 | 3.9 | 3.9 | 3.8 | 3.8 | 3.7 | 3.7 | 3.6 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.0 | Bright |
| 2 | 4.9 | Bright |
| 3 | 4.9 | Bright |
| 4 | 4.8 | Bright |
| 5 | 4.8 | Bright |
| 6 | 4.8 | Bright |
| 7 | 4.7 | Bright |
| 8 | 4.7 | Bright |
| 9 | 4.6 | Bright |
| 10 | 4.6 | Bright |
| 11 | 4.5 | Bright |
| 12 | 4.5 | Bright |
| 13 | 4.4 | Bright |
| 14 | 4.4 | Bright |
| 15 | 4.3 | Bright |
| 16 | 4.3 | Bright |
| 17 | 4.2 | Bright |
| 18 | 4.2 | Bright |
| 19 | 4.1 | Bright |
| 20 | 4.1 | Bright |
| 21 | 4.0 | Bright |
| 22 | 4.0 | Bright |
| 23 | 4.0 | Moderate |
| 24 | 3.9 | Moderate |
| 25 | 3.9 | Moderate |
| 26 | 3.8 | Moderate |
| 27 | 3.8 | Moderate |
| 28 | 3.7 | Moderate |
| 29 | 3.7 | Moderate |
| 30 | 3.6 | Moderate |
Is September a good time to visit Grandville?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a reasonable time to visit Grandville for sightseeing.
What to pack for Grandville in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Grandville sees daytime highs around 72°F and nights near 54°F. Worth packing: light clothes and rain gear. About 9 days see rain.
Sea temperature near Grandville in September
The nearest coast averages about 67°F in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 31 mi away) is warmest in August at about 71°F and coldest in March near 36°F.
It's comfortable for a long swim from Jul 20 to Sep 8 — about 1.7 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 39 | 37 | 36 | 38 | 44 | 56 | 68 | 71 | 67 | 58 | 49 | 43 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 39 | Bracing |
| Feb | 37 | Bracing |
| Mar | 36 | Bracing |
| Apr | 38 | Bracing |
| May | 44 | Bracing |
| Jun | 56 | Bracing |
| Jul | 68 | Cool |
| Aug | 71 | Refreshing |
| Sep | 67 | Cool |
| Oct | 58 | Bracing |
| Nov | 49 | Bracing |
| Dec | 43 | Bracing |
UV index in Grandville in September
Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Grandville peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 2 | 4 | 5 | 7 | 9 | 9 | 7 | 6 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 5 | High |
| May | 7 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 7 | Very high |
| Sep | 6 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Moderate |
| Dec | 1 | Low |
Where is Grandville?
Grandville sits at 42.9°N, 85.8°W, 604 ft above sea level, in United States. The nearest listed city is Jenison, 1.2 mi away.
Topography around Grandville
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Grandville.
Within 2 miles, the terrain around Grandville has only modest variations in elevation — a maximum elevation change of 236 ft around an average of 633 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 476 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 659 ft.
The land around Grandville is covered by trees (44%) and artificial surfaces (30%) within 2 miles, trees (41%) and grassland (25%) within 10 miles, and trees (45%), cropland (22%) and water (20%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Grandville (42.9098°, -85.7631°, elevation 604 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).