August weather in Castle Valley, UT
The average temperature in Castle Valley in August is 78.6°F (64.8°F–92.3°F). Average precipitation: 1.06 inches.
August is a summer month in Castle Valley, and is warmer than the annual average of 54.7°F. Daily temperatures swing about 27.5°F between overnight low and afternoon high. Daylight averages about 13h 30m. For travel, August is hot.
Avg High
92.3°F
Avg Low
64.8°F
Precipitation
1.06 in
Daylight
13h 30m
August records in Castle Valley
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 102.0°F (2020) | 64.9°F (2019) | 0.50 in (2023) |
| August 2 | 102.9°F (2024) | 62.1°F (2021) | 0.64 in (2022) |
| August 3 | 102.9°F (2020) | 59.0°F (2015) | 0.23 in (2023) |
| August 4 | 100.9°F (2020) | 45.0°F (2022) | 0.11 in (2015) |
| August 5 | 100.9°F (2020) | 61.0°F (2019) | 0.30 in (2017) |
| August 6 | 100.9°F (2024) | 61.0°F (2022) | 0.34 in (2016) |
| August 7 | 100.0°F (2019) | 60.1°F (2016) | 0.06 in (2016) |
| August 8 | 100.9°F (2024) | 59.0°F (2015) | 0.02 in (2017) |
| August 9 | 99.0°F (2018) | 57.9°F (2017) | 0.02 in (2016) |
| August 10 | 100.0°F (2018) | 60.1°F (2015) | 0.00 in (2015) |
| August 11 | 100.0°F (2018) | 64.9°F (2017) | 0.05 in (2024) |
| August 12 | 98.1°F (2018) | 57.0°F (2017) | 0.26 in (2022) |
| August 13 | 100.9°F (2018) | 59.0°F (2016) | 0.29 in (2024) |
| August 14 | 100.9°F (2021) | 63.0°F (2016) | 0.66 in (2024) |
| August 15 | 99.0°F (2020) | 57.0°F (2024) | 0.03 in (2022) |
| August 16 | 99.0°F (2020) | 55.0°F (2017) | 0.19 in (2022) |
| August 17 | 100.9°F (2020) | 61.0°F (2017) | 0.00 in (2015) |
| August 18 | 100.9°F (2020) | 61.0°F (2016) | 0.09 in (2024) |
| August 19 | 102.9°F (2020) | 55.9°F (2021) | 0.73 in (2021) |
| August 20 | 104.0°F (2020) | 46.9°F (2021) | 0.52 in (2021) |
| August 21 | 102.0°F (2020) | 55.0°F (2021) | 0.15 in (2022) |
| August 22 | 100.0°F (2020) | 60.1°F (2022) | 0.76 in (2018) |
| August 23 | 102.9°F (2020) | 59.0°F (2018) | 0.06 in (2024) |
| August 24 | 100.0°F (2020) | 55.0°F (2016) | 0.93 in (2024) |
| August 25 | 100.0°F (2020) | 55.9°F (2016) | 0.27 in (2023) |
| August 26 | 100.0°F (2020) | 48.9°F (2016) | 0.35 in (2024) |
| August 27 | 99.0°F (2020) | 53.1°F (2016) | 0.30 in (2015) |
| August 28 | 99.0°F (2020) | 57.0°F (2024) | 0.02 in (2015) |
| August 29 | 97.0°F (2017) | 54.0°F (2016) | 0.00 in (2015) |
| August 30 | 98.1°F (2017) | 55.0°F (2021) | 0.00 in (2015) |
| August 31 | 98.1°F (2017) | 57.9°F (2024) | 0.02 in (2015) |