Garrison Dam Weather Forecast
- 37
- 43
Rain Showers
- 34
- 41
Rain Showers
- 34
- 47
Rain Showers Likely
- 40
- 63
Partly Sunny
- 41
- 61
Chance Rain Showers
- 44
- 61
Chance Rain Showers
Today 19 May McLean
Showers. Highs in the mid 40s. Northeast Winds 20 to 25 Mph with Gusts up to 35 Mph.
Tonight 19 May McLean
Showers. Lows in the upper 30s. Northeast Winds 10 to 20 Mph.
Garrison Dam Temperature Statistics
May Temperature
Garrison (10.6 miles)
Lowest 1 May, 2025
33.7 °FAverage May
58.6 °FHighest 11 May, 2025
97.6 °F
Climate (2020–Present)
Garrison (10.6 miles)
Average Low 2020–2025
31.3 °FAverage 2020–2025
42.7 °FAverage High 2020–2025
54.2 °F