Gillette weather in August: Gillette, Wyoming: normal highs, lows, rain and records for August
Gillette in August has a normal high of 86°F and a normal low of 54°F, a daily mean of 70°F, falling from 88°F on the 1st to 82°F by the 31st. Measurable precipitation falls on 7 days in a normal August, 0.97 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 12°C, 25 mm of precipitation in August.
- NOAA stationGillette Campbell Airport
- Station IDUSW00094023
- Location44.34°N 105.54°W
- Elevation4,354 ft (1,327 m)
- Population33,846
- Jan 36° 14°
- Feb 37° 15°
- Mar 48° 23°
- Apr 55° 30°
- May 65° 39°
- Jun 77° 48°
- Jul 87° 56°
- Aug 86° 54°
- Sep 75° 44°
- Oct 59° 32°
- Nov 46° 22°
- Dec 36° 15°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Gillette in August?
The normal high is 86°F and the normal low 54°F, for a daily mean of 69.8°F. August is 1.5°F cooler than July and 10.4°F warmer than September. August is the 2nd warmest month of the year in Gillette and the 7th wettest. Across the month the normal high falls 6°F, from 88°F on August 1 to 82°F on August 31. From one year to the next August's mean temperature typically moves about 2.9°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 67°F and 73°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 25%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 88°F | 57°F | 25% | 10% |
| August 8 | 87°F | 56°F | 24% | 9% |
| August 15 | 86°F | 54°F | 22% | 9% |
| August 22 | 85°F | 52°F | 21% | 8% |
| August 31 | 82°F | 50°F | 21% | 8% |
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 | 88°F | 57°F | 25% | 10% | 14 h 40 min |
| August 2 | 88°F | 57°F | 25% | 10% | 14 h 40 min |
| August 3 | 88°F | 57°F | 25% | 10% | 14 h 40 min |
| August 4 | 88°F | 57°F | 25% | 10% | 14 h 30 min |
| August 5 | 88°F | 57°F | 25% | 10% | 14 h 30 min |
| August 6 | 88°F | 56°F | 24% | 9% | 14 h 30 min |
| August 7 | 88°F | 56°F | 24% | 9% | 14 h 30 min |
| August 8 | 87°F | 56°F | 24% | 9% | 14 h 20 min |
| August 9 | 87°F | 56°F | 24% | 9% | 14 h 20 min |
| August 10 | 87°F | 56°F | 23% | 9% | 14 h 20 min |
| August 11 | 87°F | 55°F | 23% | 9% | 14 h 20 min |
| August 12 | 87°F | 55°F | 23% | 9% | 14 h 10 min |
| August 13 | 87°F | 55°F | 22% | 9% | 14 h 10 min |
| August 14 | 86°F | 55°F | 22% | 9% | 14 h 10 min |
| August 15 | 86°F | 54°F | 22% | 9% | 14 h 10 min |
| August 16 | 86°F | 54°F | 22% | 9% | 14 h |
| August 17 | 86°F | 54°F | 22% | 8% | 14 h |
| August 18 | 86°F | 54°F | 21% | 8% | 14 h |
| August 19 | 85°F | 53°F | 21% | 8% | 13 h 50 min |
| August 20 | 85°F | 53°F | 21% | 8% | 13 h 50 min |
| August 21 | 85°F | 53°F | 21% | 8% | 13 h 50 min |
| August 22 | 85°F | 52°F | 21% | 8% | 13 h 50 min |
| August 23 | 84°F | 52°F | 21% | 8% | 13 h 40 min |
| August 24 | 84°F | 52°F | 20% | 8% | 13 h 40 min |
| August 25 | 84°F | 51°F | 20% | 8% | 13 h 40 min |
| August 26 | 84°F | 51°F | 20% | 8% | 13 h 30 min |
| August 27 | 83°F | 51°F | 20% | 8% | 13 h 30 min |
| August 28 | 83°F | 51°F | 20% | 8% | 13 h 30 min |
| August 29 | 83°F | 50°F | 20% | 8% | 13 h 30 min |
| August 30 | 82°F | 50°F | 20% | 8% | 13 h 20 min |
| August 31 | 82°F | 50°F | 21% | 8% | 13 h 20 min |
- Normal high
- 86°FAugust average
- Normal low
- 54°FAugust average
- Precipitation
- 0.97 inmonth total
- Days with precipitation
- 70.01 inch or more
- Days at 90°F or more
- 12
- Daylight
- 14 h 40 min to 13 h 20 minAugust 1 to August 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 24
- Sunshine
- 87%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094023; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Gillette in August?
On a given August day the chance of 0.01 inch or more is 22% on average, highest around August 1 (25%). In all, 0.97 in falls on 7 days of a normal August.
In a normal August in Gillette, 12 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094023.
How humid and windy is Gillette in August?
At 3 p.m. the normal temperature is 81°F with 23% relative humidity and a dew point of 39°F; at 6 a.m. it is 56°F with 61% humidity. The wind averages 9.3 mph, most often from the north-northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 56°F | 43°F | 61% | 8.0 mph | 81% |
| 9 a.m. | 70°F | 44°F | 39% | 11.2 mph | 83% |
| noon | 78°F | 41°F | 27% | 10.3 mph | 84% |
| 3 p.m. | 81°F | 39°F | 23% | 10.6 mph | 81% |
| 6 p.m. | 75°F | 40°F | 28% | 9.9 mph | 82% |
| 9 p.m. | 62°F | 42°F | 48% | 7.5 mph | 81% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00094023. 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 Gillette?
The August mean against the 1991-2020 normal of 69.8°F: 2021 70.0°F (+0.3), 2022 73.8°F (+4.0), 2023 70.6°F (+0.8), 2024 71.8°F (+2.0), 2025 71.1°F (+1.3), 2026 70.8°F (+1.0). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 70.0°F | +0.3°F | 0.45 in |
| 2022 | 73.8°F | +4.0°F | 0.41 in |
| 2023 | 70.6°F | +0.8°F | 1.85 in |
| 2024 | 71.8°F | +2.0°F | 0.47 in |
| 2025 | 71.1°F | +1.3°F | 0.45 in |
| 2026 | 70.8°F | +1.0°F | 0.27 in |
Source: recent months: ACIS, station USW00094023. Records and recent months use complete months only.
How does August in Gillette compare across Wyoming?
Across the 71 places PlainClimate covers in Wyoming, August normal highs run from 74°F in Sundance to 91°F in Basin; Gillette's is 86°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.