Watertown weather in August
In August, Watertown sees average daytime highs of 78°F and overnight lows near 59°F, with 3.2 in of rain across 9.3 wet days and about 13.9 hours of daylight. It is the 2nd-warmest and 3rd-wettest month of the year here.
Day-to-day highs hold fairly steady near 78°F through the month. The sky is clear or mostly clear about 47% of the time in August, and the air most often feels humid.
Daylight stretches from about 14 h 36 min at the start of August to 13 h 12 min by month's end. Set against the rest of the year, August is Watertown's 2nd-clearest and 11th-windiest month. For the whole year in context, see Watertown's year-round climate.
- Daytime high
- 78°
- 2nd warmest
- Overnight low
- 59°
- 11th coldest
- Rainfall
- 3.2 in
- 9.3 wet days
- Daylight
- 13 h 54 min
- 5:36 AM – 7:29 PM
- Cloud cover
- 45%
- 2nd clearest
- Wind
- 9 mph
- 11th windiest
- Solar energy
- 5.75 kWh/m²
- Travel score
- 7.1
- out of 10
Watertown is city in and county seat of Codington County, South Dakota, United States.
- Density
- 329/km²
- people per km²
- Founded
- 1879
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in August
Day-to-day highs hold fairly steady near 78°F through the month.
A typical August day in Watertown reaches about 78°F in the afternoon and slips back to 59°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 70°F and 87°F. Set against its neighbours, August runs about 2°F cooler than July and about 8°F warmer than September.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 80 | 80 | 80 | 79 | 79 | 79 | 79 | 79 | 79 | 79 | 79 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 77 | 77 | 77 | 77 |
| Avg low (°F) | 61 | 61 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 59 | 59 | 59 | 59 | 59 | 59 | 59 | 59 | 59 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 57 | 57 | 57 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 80 | 61 |
| 2 | 80 | 61 |
| 3 | 80 | 60 |
| 4 | 79 | 60 |
| 5 | 79 | 60 |
| 6 | 79 | 60 |
| 7 | 79 | 60 |
| 8 | 79 | 60 |
| 9 | 79 | 60 |
| 10 | 79 | 60 |
| 11 | 79 | 60 |
| 12 | 78 | 59 |
| 13 | 78 | 59 |
| 14 | 78 | 59 |
| 15 | 78 | 59 |
| 16 | 78 | 59 |
| 17 | 78 | 59 |
| 18 | 78 | 59 |
| 19 | 78 | 59 |
| 20 | 78 | 59 |
| 21 | 78 | 58 |
| 22 | 78 | 58 |
| 23 | 78 | 58 |
| 24 | 78 | 58 |
| 25 | 78 | 58 |
| 26 | 78 | 58 |
| 27 | 78 | 58 |
| 28 | 77 | 58 |
| 29 | 77 | 57 |
| 30 | 77 | 57 |
| 31 | 77 | 57 |
How August really feels in Watertown
Once humidity and wind are folded in, August 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.
August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Watertown weather by month
How August compares with the rest of the year at a glance. August is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 21° / 6° | 0.9 | 5.2 | 5.4 | 9 | 0.0 |
| Feb | 25° / 10° | 0.8 | 4.6 | 4.6 | 10.1 | 0.0 |
| Mar | 38° / 21° | 1.6 | 6 | 3.8 | 11.6 | 0.2 |
| Apr | 53° / 33° | 2.8 | 9.5 | 3 | 13.2 | 3.0 |
| May | 66° / 46° | 3.4 | 11.4 | 0.1 | 14.6 | 5.7 |
| Jun | 75° / 57° | 4.4 | 12.2 | 0 | 15.3 | 6.5 |
| Jul | 80° / 62° | 3.1 | 9.4 | 0 | 15.1 | 6.9 |
| Aug | 78° / 59° | 3.2 | 9.3 | 0 | 13.9 | 7.1 |
| Sep | 71° / 50° | 2.5 | 8 | 0 | 12.3 | 7.0 |
| Oct | 56° / 37° | 2.2 | 6.9 | 1.2 | 10.7 | 4.1 |
| Nov | 40° / 24° | 1.3 | 5 | 3.6 | 9.4 | 0.4 |
| Dec | 26° / 13° | 0.9 | 5 | 5.4 | 8.7 | 0.0 |
Cloud cover in August
The sky is clear or mostly clear about 47% of the time in August.
Beyond those clear spells, partly cloudy skies cover about 19% of August, with mostly cloudy or overcast conditions the remaining 34%.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 69 | 68 | 68 | 67 | 67 | 66 | 65 | 65 | 64 | 64 | 64 | 64 | 65 | 65 | 65 | 65 | 65 | 65 | 66 | 66 | 67 | 66 | 66 | 67 | 67 | 67 | 67 | 67 | 67 | 67 | 67 |
| Cloudier (%) | 31 | 32 | 32 | 33 | 33 | 34 | 35 | 35 | 36 | 36 | 36 | 36 | 35 | 35 | 35 | 35 | 35 | 35 | 34 | 34 | 33 | 34 | 34 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 69 | 31 |
| 2 | 68 | 32 |
| 3 | 68 | 32 |
| 4 | 67 | 33 |
| 5 | 67 | 33 |
| 6 | 66 | 34 |
| 7 | 65 | 35 |
| 8 | 65 | 35 |
| 9 | 64 | 36 |
| 10 | 64 | 36 |
| 11 | 64 | 36 |
| 12 | 64 | 36 |
| 13 | 65 | 35 |
| 14 | 65 | 35 |
| 15 | 65 | 35 |
| 16 | 65 | 35 |
| 17 | 65 | 35 |
| 18 | 65 | 35 |
| 19 | 66 | 34 |
| 20 | 66 | 34 |
| 21 | 67 | 33 |
| 22 | 66 | 34 |
| 23 | 66 | 34 |
| 24 | 67 | 33 |
| 25 | 67 | 33 |
| 26 | 67 | 33 |
| 27 | 67 | 33 |
| 28 | 67 | 33 |
| 29 | 67 | 33 |
| 30 | 67 | 33 |
| 31 | 67 | 33 |
Chance of precipitation in August
Watertown gets around 3.2 in of rain over 9.3 wet days in August. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 30% and peaks near 31% on the wettest days.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 29 | 29 | 28 | 27 | 27 | 27 | 26 | 26 | 26 |
| Rain chance (%) | |
|---|---|
| 1 | 31 |
| 2 | 31 |
| 3 | 31 |
| 4 | 31 |
| 5 | 31 |
| 6 | 31 |
| 7 | 31 |
| 8 | 31 |
| 9 | 31 |
| 10 | 31 |
| 11 | 31 |
| 12 | 31 |
| 13 | 31 |
| 14 | 31 |
| 15 | 31 |
| 16 | 31 |
| 17 | 31 |
| 18 | 31 |
| 19 | 30 |
| 20 | 30 |
| 21 | 30 |
| 22 | 30 |
| 23 | 29 |
| 24 | 29 |
| 25 | 28 |
| 26 | 27 |
| 27 | 27 |
| 28 | 27 |
| 29 | 26 |
| 30 | 26 |
| 31 | 26 |
Humidity in August
Most of August feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, August lands in the humid band about 28% of days. Sticky, muggy-or-worse air turns up on roughly 18% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 24 | 24 | 25 | 25 | 26 | 26 | 27 | 27 | 28 | 28 | 29 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 37 | 39 | 41 |
| Comfortable (%) | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 25 | 25 | 24 | 24 | 24 | 23 | 23 | 22 | 22 | 22 |
| Humid (%) | 26 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 25 | 24 |
| Muggy (%) | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 14 | 13 | 12 |
| Oppressive (%) | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 22 | 29 | 26 | 18 | 5 |
| 2 | 22 | 28 | 26 | 18 | 5 |
| 3 | 22 | 28 | 27 | 18 | 4 |
| 4 | 22 | 28 | 27 | 18 | 4 |
| 5 | 22 | 28 | 27 | 18 | 4 |
| 6 | 22 | 28 | 28 | 18 | 4 |
| 7 | 23 | 28 | 28 | 18 | 4 |
| 8 | 23 | 28 | 28 | 17 | 3 |
| 9 | 23 | 28 | 28 | 17 | 3 |
| 10 | 23 | 28 | 29 | 17 | 3 |
| 11 | 24 | 28 | 29 | 16 | 3 |
| 12 | 24 | 28 | 29 | 16 | 3 |
| 13 | 25 | 28 | 29 | 15 | 3 |
| 14 | 25 | 28 | 29 | 15 | 2 |
| 15 | 26 | 28 | 29 | 15 | 2 |
| 16 | 26 | 28 | 29 | 15 | 2 |
| 17 | 27 | 27 | 29 | 16 | 2 |
| 18 | 27 | 27 | 29 | 16 | 1 |
| 19 | 28 | 27 | 29 | 16 | 1 |
| 20 | 28 | 26 | 29 | 16 | 1 |
| 21 | 29 | 26 | 28 | 16 | 1 |
| 22 | 29 | 25 | 28 | 16 | 1 |
| 23 | 30 | 25 | 28 | 16 | 1 |
| 24 | 31 | 24 | 28 | 16 | 1 |
| 25 | 32 | 24 | 28 | 16 | 1 |
| 26 | 33 | 24 | 27 | 16 | 1 |
| 27 | 34 | 23 | 27 | 15 | 1 |
| 28 | 35 | 23 | 26 | 15 | 1 |
| 29 | 37 | 22 | 26 | 14 | 0 |
| 30 | 39 | 22 | 25 | 13 | 0 |
| 31 | 41 | 22 | 24 | 12 | 0 |
Wind in August
Winds average 9 mph in August.
Across August, daily wind ranges from about 8 mph on the calmest days to 10 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 8 | light breeze |
| 2 | 8 | light breeze |
| 3 | 8 | light breeze |
| 4 | 8 | light breeze |
| 5 | 8 | light breeze |
| 6 | 8 | light breeze |
| 7 | 8 | light breeze |
| 8 | 8 | light breeze |
| 9 | 8 | light breeze |
| 10 | 8 | light breeze |
| 11 | 8 | light breeze |
| 12 | 8 | light breeze |
| 13 | 8 | light breeze |
| 14 | 9 | light breeze |
| 15 | 9 | light breeze |
| 16 | 9 | light breeze |
| 17 | 9 | light breeze |
| 18 | 9 | light breeze |
| 19 | 9 | light breeze |
| 20 | 9 | light breeze |
| 21 | 9 | light breeze |
| 22 | 9 | light breeze |
| 23 | 9 | light breeze |
| 24 | 9 | light breeze |
| 25 | 9 | light breeze |
| 26 | 9 | light breeze |
| 27 | 9 | light breeze |
| 28 | 9 | light breeze |
| 29 | 9 | light breeze |
| 30 | 10 | light breeze |
| 31 | 10 | light breeze |
Sunrise & sunset in August
Daylight runs from about 14 h 36 min at the start of August to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 84 minutes over August. Sunrise moves from 5:18 AM to 5:54 AM, and sunset from 7:51 PM to 7:03 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.6 | 14.5 | 14.5 | 14.4 | 14.4 | 14.3 | 14.3 | 14.3 | 14.2 | 14.2 | 14.1 | 14.1 | 14.0 | 14.0 | 13.9 | 13.9 | 13.9 | 13.8 | 13.8 | 13.7 | 13.7 | 13.6 | 13.6 | 13.5 | 13.5 | 13.4 | 13.4 | 13.3 | 13.3 | 13.2 | 13.2 |
| Sunrise (AM) | 5:18 | 5:19 | 5:20 | 5:21 | 5:22 | 5:24 | 5:25 | 5:26 | 5:27 | 5:28 | 5:30 | 5:31 | 5:32 | 5:33 | 5:34 | 5:36 | 5:37 | 5:38 | 5:39 | 5:40 | 5:42 | 5:43 | 5:44 | 5:45 | 5:47 | 5:48 | 5:49 | 5:50 | 5:51 | 5:53 | 5:54 |
| Sunset (PM) | 7:51 | 7:50 | 7:49 | 7:47 | 7:46 | 7:45 | 7:43 | 7:42 | 7:40 | 7:39 | 7:37 | 7:36 | 7:34 | 7:33 | 7:31 | 7:29 | 7:28 | 7:26 | 7:25 | 7:23 | 7:21 | 7:19 | 7:18 | 7:16 | 7:14 | 7:12 | 7:10 | 7:09 | 7:07 | 7:05 | 7:03 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.6 | 5:18 | 7:51 |
| 2 | 14.5 | 5:19 | 7:50 |
| 3 | 14.5 | 5:20 | 7:49 |
| 4 | 14.4 | 5:21 | 7:47 |
| 5 | 14.4 | 5:22 | 7:46 |
| 6 | 14.3 | 5:24 | 7:45 |
| 7 | 14.3 | 5:25 | 7:43 |
| 8 | 14.3 | 5:26 | 7:42 |
| 9 | 14.2 | 5:27 | 7:40 |
| 10 | 14.2 | 5:28 | 7:39 |
| 11 | 14.1 | 5:30 | 7:37 |
| 12 | 14.1 | 5:31 | 7:36 |
| 13 | 14.0 | 5:32 | 7:34 |
| 14 | 14.0 | 5:33 | 7:33 |
| 15 | 13.9 | 5:34 | 7:31 |
| 16 | 13.9 | 5:36 | 7:29 |
| 17 | 13.9 | 5:37 | 7:28 |
| 18 | 13.8 | 5:38 | 7:26 |
| 19 | 13.8 | 5:39 | 7:25 |
| 20 | 13.7 | 5:40 | 7:23 |
| 21 | 13.7 | 5:42 | 7:21 |
| 22 | 13.6 | 5:43 | 7:19 |
| 23 | 13.6 | 5:44 | 7:18 |
| 24 | 13.5 | 5:45 | 7:16 |
| 25 | 13.5 | 5:47 | 7:14 |
| 26 | 13.4 | 5:48 | 7:12 |
| 27 | 13.4 | 5:49 | 7:10 |
| 28 | 13.3 | 5:50 | 7:09 |
| 29 | 13.3 | 5:51 | 7:07 |
| 30 | 13.2 | 5:53 | 7:05 |
| 31 | 13.2 | 5:54 | 7:03 |
Solar energy in August
Average shortwave solar energy reaching the ground each day in August, about 5.75 kWh/m².
For context, solar energy here swings from a low near 1.56 kWh/m² to a high of 6.64 kWh/m² in July across the year — August's 5.75 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.2 | 6.2 | 6.2 | 6.1 | 6.1 | 6.0 | 6.0 | 6.0 | 5.9 | 5.9 | 5.9 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.7 | 5.7 | 5.7 | 5.7 | 5.6 | 5.6 | 5.6 | 5.5 | 5.5 | 5.5 | 5.4 | 5.4 | 5.3 | 5.3 | 5.3 |
| Level | Intense | Intense | Intense | 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 |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.2 | Intense |
| 2 | 6.2 | Intense |
| 3 | 6.2 | Intense |
| 4 | 6.1 | Intense |
| 5 | 6.1 | Intense |
| 6 | 6.0 | Intense |
| 7 | 6.0 | Intense |
| 8 | 6.0 | Bright |
| 9 | 5.9 | Bright |
| 10 | 5.9 | Bright |
| 11 | 5.9 | Bright |
| 12 | 5.8 | Bright |
| 13 | 5.8 | Bright |
| 14 | 5.8 | Bright |
| 15 | 5.8 | Bright |
| 16 | 5.8 | Bright |
| 17 | 5.7 | Bright |
| 18 | 5.7 | Bright |
| 19 | 5.7 | Bright |
| 20 | 5.7 | Bright |
| 21 | 5.6 | Bright |
| 22 | 5.6 | Bright |
| 23 | 5.6 | Bright |
| 24 | 5.5 | Bright |
| 25 | 5.5 | Bright |
| 26 | 5.5 | Bright |
| 27 | 5.4 | Bright |
| 28 | 5.4 | Bright |
| 29 | 5.3 | Bright |
| 30 | 5.3 | Bright |
| 31 | 5.3 | Bright |
Hazard calendar for Watertown
In August, Watertown sits inside its atlantic hurricane and rainy season season. The full year is below, with each hazard's peak months called out.
Watertown sits in the Atlantic hurricane belt; the season peaks August–October.
Watertown's rainy season runs April–October, when most of the year's rain falls.
Is August a good time to visit Watertown?
Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
August is one of the better times to visit Watertown for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Watertown in August
From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In August, Watertown sees daytime highs around 78°F and nights near 59°F. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.
UV index in Watertown in August
Clear-sky midday UV in August 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 Watertown peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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) | 1 | 2 | 4 | 5 | 6 | 9 | 8 | 6 | 6 | 4 | 2 | 1 |
| Level | Low | Moderate | Moderate | Moderate | High | Very high | Very high | High | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 6 | High |
| Jun | 9 | Very high |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Watertown?
Watertown sits at 44.9°N, 97.1°W, 1,732 ft above sea level, in United States. The nearest listed city is Brookings, 43 mi away.
Topography around Watertown
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Watertown.
Within 2 miles, the terrain around Watertown has only modest variations in elevation — a maximum elevation change of 115 ft around an average of 1,736 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 344 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,237 ft.
The land around Watertown is covered by grassland (38%) and artificial surfaces (29%) within 2 miles, cropland (58%) and grassland (28%) within 10 miles, and cropland (62%) and grassland (29%) 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 Watertown (44.8994°, -97.1151°, elevation 1,732 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).