Rock Springs weather in August: Rock Springs, Wyoming: normal highs, lows, rain and records for August
Rock Springs in August has a normal high of 82°F and a normal low of 53°F, a daily mean of 67°F, falling from 85°F on the 1st to 77°F by the 31st. Measurable precipitation falls on 6 days in a normal August, 0.56 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 12°C, 14 mm of precipitation in August.
- NOAA stationRock Springs Airport
- Station IDUSW00024027
- Location41.59°N 109.05°W
- Elevation6,741 ft (2,055 m)
- Population22,967
- Jan 30° 14°
- Feb 33° 16°
- Mar 44° 24°
- Apr 53° 30°
- May 63° 38°
- Jun 75° 47°
- Jul 84° 55°
- Aug 82° 53°
- Sep 71° 44°
- Oct 56° 33°
- Nov 41° 22°
- Dec 30° 13°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Rock Springs in August?
The normal high is 82°F and the normal low 53°F, for a daily mean of 67.3°F. August is 2.1°F cooler than July and 10.0°F warmer than September. August is the 2nd warmest month of the year in Rock Springs and the 7th wettest. Across the month the normal high falls 8°F, from 85°F on August 1 to 77°F on August 31. From one year to the next August's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 65°F and 69°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 20%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 85°F | 56°F | 18% | 6% |
| August 8 | 84°F | 55°F | 19% | 6% |
| August 15 | 82°F | 54°F | 19% | 6% |
| August 22 | 80°F | 52°F | 19% | 7% |
| August 31 | 77°F | 49°F | 20% | 7% |
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 | 85°F | 56°F | 18% | 6% | 14 h 30 min |
| August 2 | 85°F | 56°F | 18% | 6% | 14 h 20 min |
| August 3 | 85°F | 56°F | 18% | 6% | 14 h 20 min |
| August 4 | 85°F | 56°F | 18% | 6% | 14 h 20 min |
| August 5 | 84°F | 56°F | 18% | 6% | 14 h 20 min |
| August 6 | 84°F | 55°F | 18% | 6% | 14 h 20 min |
| August 7 | 84°F | 55°F | 19% | 6% | 14 h 10 min |
| August 8 | 84°F | 55°F | 19% | 6% | 14 h 10 min |
| August 9 | 84°F | 55°F | 19% | 6% | 14 h 10 min |
| August 10 | 83°F | 55°F | 19% | 6% | 14 h 10 min |
| August 11 | 83°F | 55°F | 19% | 6% | 14 h |
| August 12 | 83°F | 54°F | 19% | 6% | 14 h |
| August 13 | 83°F | 54°F | 19% | 6% | 14 h |
| August 14 | 82°F | 54°F | 19% | 6% | 14 h |
| August 15 | 82°F | 54°F | 19% | 6% | 13 h 50 min |
| August 16 | 82°F | 53°F | 19% | 6% | 13 h 50 min |
| August 17 | 82°F | 53°F | 19% | 6% | 13 h 50 min |
| August 18 | 81°F | 53°F | 19% | 6% | 13 h 50 min |
| August 19 | 81°F | 53°F | 19% | 7% | 13 h 40 min |
| August 20 | 81°F | 52°F | 19% | 7% | 13 h 40 min |
| August 21 | 80°F | 52°F | 19% | 7% | 13 h 40 min |
| August 22 | 80°F | 52°F | 19% | 7% | 13 h 40 min |
| August 23 | 80°F | 52°F | 19% | 7% | 13 h 30 min |
| August 24 | 79°F | 51°F | 19% | 7% | 13 h 30 min |
| August 25 | 79°F | 51°F | 19% | 7% | 13 h 30 min |
| August 26 | 79°F | 51°F | 19% | 7% | 13 h 30 min |
| August 27 | 78°F | 50°F | 19% | 7% | 13 h 20 min |
| August 28 | 78°F | 50°F | 19% | 7% | 13 h 20 min |
| August 29 | 78°F | 50°F | 20% | 7% | 13 h 20 min |
| August 30 | 77°F | 50°F | 20% | 7% | 13 h 20 min |
| August 31 | 77°F | 49°F | 20% | 7% | 13 h 10 min |
- Normal high
- 82°FAugust average
- Normal low
- 53°FAugust average
- Precipitation
- 0.56 inmonth total
- Days with precipitation
- 60.01 inch or more
- Days at 90°F or more
- 2
- Daylight
- 14 h 30 min to 13 h 10 minAugust 1 to August 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 22
- Sunshine
- 84%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024027; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Rock Springs in August?
On a given August day the chance of 0.01 inch or more is 19% on average, highest around August 29 (20%). In all, 0.56 in falls on 6 days of a normal August.
In a normal August in Rock Springs, 2 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024027.
How humid and windy is Rock Springs in August?
At 3 p.m. the normal temperature is 76°F with 19% relative humidity and a dew point of 31°F; at 6 a.m. it is 52°F with 51% humidity. The wind averages 9.1 mph, most often from the west-southwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 52°F | 35°F | 51% | 5.4 mph | 81% |
| 9 a.m. | 63°F | 37°F | 37% | 7.1 mph | 84% |
| noon | 74°F | 33°F | 22% | 11.2 mph | 83% |
| 3 p.m. | 76°F | 31°F | 19% | 14.1 mph | 71% |
| 6 p.m. | 72°F | 31°F | 22% | 13.0 mph | 72% |
| 9 p.m. | 63°F | 33°F | 32% | 9.3 mph | 78% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024027. 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 Rock Springs?
The warmest August temperature on this station's record (since 1948) is 97°F, on August 2, 2026; the coldest is 33°F, on August 31, 1962. The wettest August brought 3.12 in (1963).
The August mean against the 1991-2020 normal of 67.3°F: 2021 66.9°F (−0.4), 2022 69.9°F (+2.6), 2023 68.0°F (+0.7), 2024 68.3°F (+1.0), 2025 68.5°F (+1.2), 2026 70.6°F (+3.3). 5 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.9°F | −0.4°F | 1.67 in |
| 2022 | 69.9°F | +2.6°F | 0.93 in |
| 2023 | 68.0°F | +0.7°F | 0.92 in |
| 2024 | 68.3°F | +1.0°F | 0.85 in |
| 2025 | 68.5°F | +1.2°F | 0.23 in |
| 2026 | 70.6°F | +3.3°F | 0.85 in |
Source: records: ACIS, station USW00024027; recent months: ACIS, station USW00024027. Records and recent months use complete months only.
How does August in Rock Springs 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; Rock Springs's is 82°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.