Williston weather in August: Williston, North Dakota: normal highs, lows, rain and records for August
Williston in August has a normal high of 84°F and a normal low of 54°F, a daily mean of 69°F, falling from 87°F on the 1st to 79°F by the 31st. Measurable precipitation falls on 9 days in a normal August, 1.57 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 29°C and low of 12°C, 40 mm of precipitation in August.
- NOAA stationWilliston Sloulin Field
- Station IDUSW00094014
- Location48.17°N 103.64°W
- Elevation1,902 ft (580 m)
- Population28,821
- Jan 22° 1°
- Feb 27° 6°
- Mar 40° 18°
- Apr 56° 29°
- May 67° 40°
- Jun 77° 50°
- Jul 85° 56°
- Aug 84° 54°
- Sep 73° 44°
- Oct 56° 30°
- Nov 38° 17°
- Dec 26° 6°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Williston in August?
The normal high is 84°F and the normal low 54°F, for a daily mean of 69.0°F. August is 1.4°F cooler than July and 11.0°F warmer than September. August is the 2nd warmest month of the year in Williston and the 4th wettest. Across the month the normal high falls 8°F, from 87°F on August 1 to 79°F on August 31. From one year to the next August's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 66°F and 72°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 29%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 87°F | 57°F | 29% | 14% |
| August 8 | 86°F | 56°F | 28% | 13% |
| August 15 | 85°F | 55°F | 27% | 12% |
| August 22 | 83°F | 53°F | 26% | 12% |
| August 31 | 79°F | 49°F | 25% | 11% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 87°F | 57°F | 29% | 14% | 15 h |
| August 2 | 87°F | 57°F | 29% | 14% | 15 h |
| August 3 | 87°F | 57°F | 29% | 14% | 15 h |
| August 4 | 86°F | 57°F | 29% | 14% | 15 h |
| August 5 | 86°F | 57°F | 29% | 14% | 14 h 50 min |
| August 6 | 86°F | 57°F | 28% | 13% | 14 h 50 min |
| August 7 | 86°F | 56°F | 28% | 13% | 14 h 50 min |
| August 8 | 86°F | 56°F | 28% | 13% | 14 h 40 min |
| August 9 | 86°F | 56°F | 28% | 13% | 14 h 40 min |
| August 10 | 86°F | 56°F | 28% | 13% | 14 h 40 min |
| August 11 | 86°F | 56°F | 28% | 13% | 14 h 40 min |
| August 12 | 85°F | 55°F | 27% | 13% | 14 h 30 min |
| August 13 | 85°F | 55°F | 27% | 13% | 14 h 30 min |
| August 14 | 85°F | 55°F | 27% | 12% | 14 h 30 min |
| August 15 | 85°F | 55°F | 27% | 12% | 14 h 20 min |
| August 16 | 84°F | 54°F | 27% | 12% | 14 h 20 min |
| August 17 | 84°F | 54°F | 27% | 12% | 14 h 20 min |
| August 18 | 84°F | 54°F | 26% | 12% | 14 h 10 min |
| August 19 | 84°F | 54°F | 26% | 12% | 14 h 10 min |
| August 20 | 83°F | 53°F | 26% | 12% | 14 h 10 min |
| August 21 | 83°F | 53°F | 26% | 12% | 14 h |
| August 22 | 83°F | 53°F | 26% | 12% | 14 h |
| August 23 | 82°F | 52°F | 26% | 12% | 14 h |
| August 24 | 82°F | 52°F | 26% | 12% | 13 h 50 min |
| August 25 | 82°F | 52°F | 26% | 12% | 13 h 50 min |
| August 26 | 81°F | 51°F | 26% | 12% | 13 h 50 min |
| August 27 | 81°F | 51°F | 26% | 12% | 13 h 40 min |
| August 28 | 81°F | 51°F | 25% | 11% | 13 h 40 min |
| August 29 | 80°F | 50°F | 25% | 11% | 13 h 40 min |
| August 30 | 80°F | 50°F | 25% | 11% | 13 h 30 min |
| August 31 | 79°F | 49°F | 25% | 11% | 13 h 30 min |
- Normal high
- 84°FAugust average
- Normal low
- 54°FAugust average
- Precipitation
- 1.57 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 9
- Daylight
- 15 h to 13 h 30 minAugust 1 to August 31
- Days at 70°F or more
- 29
- Days at 80°F or more
- 21
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094014; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Williston in August?
On a given August day the chance of 0.01 inch or more is 27% on average, highest around August 1 (29%). In all, 1.57 in falls on 9 days of a normal August.
In a normal August in Williston, 9 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094014.
How humid and windy is Williston in August?
At 3 p.m. the normal temperature is 78°F with 33% relative humidity and a dew point of 47°F; at 6 a.m. it is 54°F with 81% humidity. The wind averages 8.2 mph, most often from the west in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 54°F | 48°F | 81% | 5.7 mph | 72% |
| 9 a.m. | 62°F | 51°F | 65% | 8.1 mph | 74% |
| noon | 73°F | 50°F | 43% | 10.8 mph | 70% |
| 3 p.m. | 78°F | 47°F | 33% | 11.5 mph | 74% |
| 6 p.m. | 77°F | 47°F | 34% | 10.8 mph | 71% |
| 9 p.m. | 65°F | 48°F | 55% | 7.4 mph | 80% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00094014. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for August in Williston?
The warmest August temperature on Williston's official record (since 1894) is 108°F, on August 7, 1949; the coldest is 32°F, on August 22, 1908. The wettest August brought 5.06 in (1947).
Source: records: ACIS, NWS threaded record ISNthr. Records and recent months use complete months only.
How does August in Williston compare across North Dakota?
Across the 92 places PlainClimate covers in North Dakota, August normal highs run from 75°F in Rolla to 86°F in Beulah; Williston's is 84°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.