July weather in Castlewood, SD
The average temperature in Castlewood in July is 70.5°F (58.5°F–82.5°F). Average precipitation: 3.49 inches.
July is a summer month in Castlewood, and is warmer than the annual average of 42.7°F. Daily temperatures swing about 24°F between overnight low and afternoon high. Daylight averages about 15h 4m. For travel, July is a comfortable month to visit.
Avg High
82.5°F
Avg Low
58.5°F
Precipitation
3.49 in
Daylight
15h 4m
July records in Castlewood
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 93.0°F (2012) | 44.1°F (2016) | 1.31 in (2019) |
| July 2 | 93.0°F (2012) | 46.9°F (2017) | 0.32 in (2018) |
| July 3 | 97.0°F (2012) | 53.1°F (2016) | 1.51 in (2018) |
| July 4 | 93.0°F (2012) | 53.1°F (2014) | 1.45 in (2023) |
| July 5 | 100.0°F (2012) | 55.0°F (2023) | 1.01 in (2024) |
| July 6 | 93.9°F (2021) | 43.0°F (2023) | 0.30 in (2019) |
| July 7 | 91.9°F (2012) | 43.0°F (2023) | 0.92 in (2021) |
| July 8 | 89.1°F (2013) | 44.1°F (2015) | 1.38 in (2022) |
| July 9 | 91.0°F (2020) | 48.9°F (2023) | 1.05 in (2013) |
| July 10 | 93.0°F (2013) | 50.0°F (2015) | 0.74 in (2019) |
| July 11 | 90.0°F (2016) | 50.0°F (2023) | 0.29 in (2021) |
| July 12 | 93.0°F (2018) | 50.0°F (2023) | 0.74 in (2017) |
| July 13 | 93.9°F (2015) | 54.0°F (2023) | 0.13 in (2018) |
| July 14 | 91.0°F (2024) | 48.0°F (2017) | 1.75 in (2013) |
| July 15 | 93.0°F (2012) | 45.0°F (2014) | 0.50 in (2013) |
| July 16 | 95.0°F (2012) | 45.0°F (2014) | 0.73 in (2025) |
| July 17 | 100.9°F (2012) | 43.0°F (2023) | 2.17 in (2016) |
| July 18 | 95.0°F (2017) | 46.9°F (2024) | 1.16 in (2020) |
| July 19 | 91.9°F (2022) | 46.9°F (2024) | 0.70 in (2018) |
| July 20 | 99.0°F (2012) | 55.9°F (2023) | 0.27 in (2018) |
| July 21 | 98.1°F (2012) | 48.9°F (2015) | 1.53 in (2020) |
| July 22 | 93.0°F (2012) | 50.0°F (2023) | 0.08 in (2022) |
| July 23 | 97.0°F (2012) | 48.9°F (2019) | 0.50 in (2016) |
| July 24 | 91.9°F (2016) | 48.9°F (2019) | 0.25 in (2021) |
| July 25 | 93.9°F (2012) | 50.0°F (2018) | 0.80 in (2014) |
| July 26 | 91.9°F (2015) | 48.9°F (2018) | 1.98 in (2015) |
| July 27 | 99.0°F (2023) | 41.0°F (2013) | 0.18 in (2016) |
| July 28 | 93.0°F (2021) | 39.9°F (2013) | 5.61 in (2025) |
| July 29 | 100.0°F (2021) | 46.0°F (2013) | 0.38 in (2019) |
| July 30 | 91.0°F (2012) | 48.0°F (2014) | 0.16 in (2013) |
| July 31 | 89.1°F (2012) | 48.0°F (2019) | 0.44 in (2021) |