Idaho Falls weather in September
In September, Idaho Falls sees average daytime highs of 74°F and overnight lows near 47°F, with 1.0 in of precipitation across 4.2 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.
Highs ease over the month, from about 80°F in the first days to 68°F by the end. The sky is clear or mostly clear about 57% 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 Idaho Falls's 3rd-clearest and 9th-windiest month. For the whole year in context, see Idaho Falls's year-round climate.
- Daytime high
- 74°
- 4th warmest
- Overnight low
- 47°
- 9th coldest
- Precipitation
- 1.0 in
- 4.2 wet days
- Daylight
- 12 h 18 min
- 6:14 AM – 6:31 PM
- Cloud cover
- 36%
- 3rd clearest
- Wind
- 6 mph
- 9th windiest
- Solar energy
- 5.36 kWh/m²
- Travel score
- 8.0
- out of 10
Idaho Falls is city in and county seat of Bonneville County, Idaho, United States.
- Density
- 988/km²
- people per km²
- Founded
- 1864
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs ease over the month, from about 80°F in the first days to 68°F by the end.
A typical September day in Idaho Falls reaches about 74°F in the afternoon and slips back to 47°F overnight — a 27°F spread between the day's warmth and the night's chill. On most days the high lands between 61°F and 84°F. Set against its neighbours, September runs about 11°F cooler than August and about 15°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) | 80 | 80 | 80 | 79 | 79 | 78 | 78 | 77 | 77 | 76 | 76 | 75 | 75 | 74 | 74 | 73 | 73 | 73 | 72 | 72 | 71 | 71 | 71 | 70 | 70 | 69 | 69 | 68 | 68 | 67 |
| Avg low (°F) | 52 | 51 | 51 | 51 | 50 | 50 | 50 | 49 | 49 | 49 | 48 | 48 | 47 | 47 | 47 | 47 | 46 | 46 | 46 | 45 | 45 | 45 | 44 | 44 | 44 | 44 | 43 | 43 | 42 | 42 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 80 | 52 |
| 2 | 80 | 51 |
| 3 | 80 | 51 |
| 4 | 79 | 51 |
| 5 | 79 | 50 |
| 6 | 78 | 50 |
| 7 | 78 | 50 |
| 8 | 77 | 49 |
| 9 | 77 | 49 |
| 10 | 76 | 49 |
| 11 | 76 | 48 |
| 12 | 75 | 48 |
| 13 | 75 | 47 |
| 14 | 74 | 47 |
| 15 | 74 | 47 |
| 16 | 73 | 47 |
| 17 | 73 | 46 |
| 18 | 73 | 46 |
| 19 | 72 | 46 |
| 20 | 72 | 45 |
| 21 | 71 | 45 |
| 22 | 71 | 45 |
| 23 | 71 | 44 |
| 24 | 70 | 44 |
| 25 | 70 | 44 |
| 26 | 69 | 44 |
| 27 | 69 | 43 |
| 28 | 68 | 43 |
| 29 | 68 | 42 |
| 30 | 67 | 42 |
How September really feels in Idaho Falls
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.
Idaho Falls weather by month
How September compares with the rest of the year at a glance. September is the 4th-warmest and 10th-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° / 17° | 1.4 | 9.4 | 10.3 | 9.1 | 0.0 |
| Feb | 36° / 21° | 1.1 | 7.8 | 7.3 | 10.2 | 0.0 |
| Mar | 47° / 29° | 1.4 | 9.2 | 4.6 | 11.6 | 1.6 |
| Apr | 56° / 34° | 1.8 | 11.2 | 3 | 13.2 | 3.7 |
| May | 66° / 42° | 2.1 | 9.6 | 0.8 | 14.5 | 6.1 |
| Jun | 76° / 50° | 1.2 | 6 | 0.1 | 15.2 | 7.5 |
| Jul | 87° / 57° | 0.5 | 3.3 | 0 | 14.9 | 5.9 |
| Aug | 85° / 55° | 0.5 | 3.5 | 0 | 13.8 | 6.5 |
| Sep | 74° / 47° | 1.0 | 4.2 | 0.1 | 12.3 | 8.0 |
| Oct | 58° / 36° | 1.3 | 6.5 | 1.2 | 10.8 | 5.0 |
| Nov | 43° / 26° | 1.2 | 7.4 | 5.5 | 9.5 | 0.7 |
| Dec | 31° / 18° | 1.5 | 9.4 | 9.7 | 8.8 | 0.0 |
Cloud cover in September
The sky is clear or mostly clear about 57% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to cloud over as the month goes on.
| 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 (%) | 79 | 79 | 79 | 77 | 77 | 77 | 76 | 76 | 76 | 75 | 75 | 75 | 73 | 73 | 73 | 71 | 71 | 71 | 71 | 70 | 70 | 70 | 70 | 70 | 69 | 68 | 68 | 68 | 68 | 67 |
| Cloudier (%) | 21 | 21 | 21 | 23 | 23 | 23 | 24 | 24 | 24 | 25 | 25 | 25 | 27 | 27 | 27 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 31 | 32 | 32 | 32 | 32 | 33 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 79 | 21 |
| 2 | 79 | 21 |
| 3 | 79 | 21 |
| 4 | 77 | 23 |
| 5 | 77 | 23 |
| 6 | 77 | 23 |
| 7 | 76 | 24 |
| 8 | 76 | 24 |
| 9 | 76 | 24 |
| 10 | 75 | 25 |
| 11 | 75 | 25 |
| 12 | 75 | 25 |
| 13 | 73 | 27 |
| 14 | 73 | 27 |
| 15 | 73 | 27 |
| 16 | 71 | 29 |
| 17 | 71 | 29 |
| 18 | 71 | 29 |
| 19 | 71 | 29 |
| 20 | 70 | 30 |
| 21 | 70 | 30 |
| 22 | 70 | 30 |
| 23 | 70 | 30 |
| 24 | 70 | 30 |
| 25 | 69 | 31 |
| 26 | 68 | 32 |
| 27 | 68 | 32 |
| 28 | 68 | 32 |
| 29 | 68 | 32 |
| 30 | 67 | 33 |
Chance of precipitation in September
Idaho Falls gets around 1.0 in of rain and snow over 4.2 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 15% and peaks near 19% on the wettest days, and about 0 day brings snow.
| 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 (%) | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 16 | 16 | 17 | 18 | 18 | 19 |
| Snow chance (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 13 | 0 |
| 2 | 13 | 0 |
| 3 | 13 | 0 |
| 4 | 13 | 0 |
| 5 | 13 | 0 |
| 6 | 13 | 0 |
| 7 | 14 | 0 |
| 8 | 14 | 0 |
| 9 | 14 | 0 |
| 10 | 14 | 0 |
| 11 | 14 | 0 |
| 12 | 14 | 0 |
| 13 | 14 | 0 |
| 14 | 14 | 0 |
| 15 | 14 | 0 |
| 16 | 14 | 0 |
| 17 | 14 | 0 |
| 18 | 14 | 0 |
| 19 | 14 | 0 |
| 20 | 14 | 0 |
| 21 | 14 | 0 |
| 22 | 14 | 0 |
| 23 | 15 | 0 |
| 24 | 15 | 1 |
| 25 | 16 | 1 |
| 26 | 16 | 1 |
| 27 | 17 | 1 |
| 28 | 18 | 1 |
| 29 | 18 | 1 |
| 30 | 19 | 2 |
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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 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 (%) | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Comfortable (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 99 | 1 |
| 2 | 99 | 1 |
| 3 | 99 | 1 |
| 4 | 99 | 1 |
| 5 | 99 | 1 |
| 6 | 99 | 1 |
| 7 | 99 | 1 |
| 8 | 99 | 1 |
| 9 | 100 | 0 |
| 10 | 100 | 0 |
| 11 | 100 | 0 |
| 12 | 100 | 0 |
| 13 | 100 | 0 |
| 14 | 100 | 0 |
| 15 | 100 | 0 |
| 16 | 100 | 0 |
| 17 | 100 | 0 |
| 18 | 100 | 0 |
| 19 | 100 | 0 |
| 20 | 100 | 0 |
| 21 | 100 | 0 |
| 22 | 100 | 0 |
| 23 | 100 | 0 |
| 24 | 100 | 0 |
| 25 | 100 | 0 |
| 26 | 100 | 0 |
| 27 | 100 | 0 |
| 28 | 100 | 0 |
| 29 | 100 | 0 |
| 30 | 100 | 0 |
Wind in September
Winds average 6 mph in September.
Across September, daily wind ranges from about 6 mph on the calmest days to 6 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 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| 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 | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 6 | calm |
| 2 | 6 | calm |
| 3 | 6 | calm |
| 4 | 6 | calm |
| 5 | 6 | calm |
| 6 | 6 | calm |
| 7 | 6 | calm |
| 8 | 6 | calm |
| 9 | 6 | calm |
| 10 | 6 | calm |
| 11 | 6 | calm |
| 12 | 6 | calm |
| 13 | 6 | calm |
| 14 | 6 | calm |
| 15 | 6 | calm |
| 16 | 6 | calm |
| 17 | 6 | calm |
| 18 | 6 | calm |
| 19 | 6 | calm |
| 20 | 6 | calm |
| 21 | 6 | calm |
| 22 | 6 | calm |
| 23 | 6 | calm |
| 24 | 6 | calm |
| 25 | 6 | calm |
| 26 | 6 | calm |
| 27 | 6 | calm |
| 28 | 6 | calm |
| 29 | 6 | calm |
| 30 | 6 | calm |
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 5:56 AM to 6:30 AM, and sunset from 6:59 PM to 6:05 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) | 5:56 | 5:58 | 5:59 | 6:00 | 6:01 | 6:02 | 6:03 | 6:04 | 6:06 | 6:07 | 6:08 | 6:09 | 6:10 | 6:11 | 6:13 | 6:14 | 6:15 | 6:16 | 6:17 | 6:18 | 6:19 | 6:21 | 6:22 | 6:23 | 6:24 | 6:25 | 6:26 | 6:28 | 6:29 | 6:30 |
| Sunset (PM) | 6:59 | 6:57 | 6:56 | 6:54 | 6:52 | 6:50 | 6:48 | 6:46 | 6:44 | 6:43 | 6:41 | 6:39 | 6:37 | 6:35 | 6:33 | 6:31 | 6:29 | 6:27 | 6:26 | 6:24 | 6:22 | 6:20 | 6:18 | 6:16 | 6:14 | 6:12 | 6:10 | 6:09 | 6:07 | 6:05 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.0 | 5:56 | 6:59 |
| 2 | 13.0 | 5:58 | 6:57 |
| 3 | 12.9 | 5:59 | 6:56 |
| 4 | 12.9 | 6:00 | 6:54 |
| 5 | 12.8 | 6:01 | 6:52 |
| 6 | 12.8 | 6:02 | 6:50 |
| 7 | 12.7 | 6:03 | 6:48 |
| 8 | 12.7 | 6:04 | 6:46 |
| 9 | 12.6 | 6:06 | 6:44 |
| 10 | 12.6 | 6:07 | 6:43 |
| 11 | 12.5 | 6:08 | 6:41 |
| 12 | 12.5 | 6:09 | 6:39 |
| 13 | 12.4 | 6:10 | 6:37 |
| 14 | 12.4 | 6:11 | 6:35 |
| 15 | 12.3 | 6:13 | 6:33 |
| 16 | 12.3 | 6:14 | 6:31 |
| 17 | 12.2 | 6:15 | 6:29 |
| 18 | 12.2 | 6:16 | 6:27 |
| 19 | 12.1 | 6:17 | 6:26 |
| 20 | 12.1 | 6:18 | 6:24 |
| 21 | 12.0 | 6:19 | 6:22 |
| 22 | 12.0 | 6:21 | 6:20 |
| 23 | 11.9 | 6:22 | 6:18 |
| 24 | 11.9 | 6:23 | 6:16 |
| 25 | 11.8 | 6:24 | 6:14 |
| 26 | 11.8 | 6:25 | 6:12 |
| 27 | 11.7 | 6:26 | 6:10 |
| 28 | 11.7 | 6:28 | 6:09 |
| 29 | 11.6 | 6:29 | 6:07 |
| 30 | 11.6 | 6:30 | 6:05 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 5.36 kWh/m².
For context, solar energy here swings from a low near 1.7 kWh/m² to a high of 7.94 kWh/m² in July across the year — September's 5.36 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) | 6.2 | 6.1 | 6.1 | 6.0 | 6.0 | 5.9 | 5.8 | 5.8 | 5.7 | 5.7 | 5.6 | 5.5 | 5.5 | 5.4 | 5.4 | 5.3 | 5.3 | 5.2 | 5.1 | 5.1 | 5.0 | 5.0 | 4.9 | 4.9 | 4.8 | 4.7 | 4.7 | 4.6 | 4.5 | 4.5 |
| Level | Intense | Intense | Intense | Intense | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.2 | Intense |
| 2 | 6.1 | Intense |
| 3 | 6.1 | Intense |
| 4 | 6.0 | Intense |
| 5 | 6.0 | Bright |
| 6 | 5.9 | Bright |
| 7 | 5.8 | Bright |
| 8 | 5.8 | Bright |
| 9 | 5.7 | Bright |
| 10 | 5.7 | Bright |
| 11 | 5.6 | Bright |
| 12 | 5.5 | Bright |
| 13 | 5.5 | Bright |
| 14 | 5.4 | Bright |
| 15 | 5.4 | Bright |
| 16 | 5.3 | Bright |
| 17 | 5.3 | Bright |
| 18 | 5.2 | Bright |
| 19 | 5.1 | Bright |
| 20 | 5.1 | Bright |
| 21 | 5.0 | Bright |
| 22 | 5.0 | Bright |
| 23 | 4.9 | Bright |
| 24 | 4.9 | Bright |
| 25 | 4.8 | Bright |
| 26 | 4.7 | Bright |
| 27 | 4.7 | Bright |
| 28 | 4.6 | Bright |
| 29 | 4.5 | Bright |
| 30 | 4.5 | Bright |
Is September a good time to visit Idaho Falls?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is one of the better times to visit Idaho Falls for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Idaho Falls in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Idaho Falls sees daytime highs around 74°F and nights near 47°F. Worth packing: light clothes and sun protection. About 4 days see rain.
UV index in Idaho Falls 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 Idaho Falls peaks around July 12 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (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 | 3 | 5 | 5 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 2 |
| Level | Low | Moderate | Moderate | Moderate | Very high | Very high | Very high | Very high | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 5 | Moderate |
| May | 8 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 2 | Low |
Air quality in Idaho Falls in September
Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.
Air quality in Idaho Falls is worst in August — around 20 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 7 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 9 | 10 | 10 | 10 | 9 | 17 | 20 | 14 | 9 | 9 | 7 |
| Level | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 9 | Good |
| Mar | 10 | Good |
| Apr | 10 | Good |
| May | 10 | Good |
| Jun | 9 | Good |
| Jul | 17 | Moderate |
| Aug | 20 | Moderate |
| Sep | 14 | Moderate |
| Oct | 9 | Good |
| Nov | 9 | Good |
| Dec | 7 | Good |
Where is Idaho Falls?
Idaho Falls sits at 43.5°N, 112.0°W, 4,705 ft above sea level, in United States. The nearest listed city is Rexburg, 28 mi away.
Topography around Idaho Falls
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Idaho Falls.
Within 2 miles, the terrain around Idaho Falls has only modest variations in elevation — a maximum elevation change of 95 ft around an average of 4,698 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,693 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,561 ft.
The land around Idaho Falls is covered by artificial surfaces (33%) and trees (22%) within 2 miles, cropland (45%) and grassland (38%) within 10 miles, and grassland (54%) and cropland (22%) 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 Idaho Falls (43.4666°, -112.0341°, elevation 4,705 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).