Mandan Lake Weather Forecast
- 60
- 87
Chance Rain Showers
- 59
- 88
Rain Showers
- 53
- 84
Rain Showers Likely
- 52
- 82
Mostly Sunny
- 55
- 84
Slight Chance Thunderstorms
- 57
- 87
Slight Chance Rain Showers
Today 28 Aug Oliver
Mostly cloudy with a chance of Showers in the Morning, then partly sunny with a slight chance of Showers and Thunderstorms in the afternoon. Highs in the mid 80s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 30 percent.
Tonight 28 Aug Oliver
Mostly cloudy. Lows in the upper 50s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph.
Mandan Lake Temperature Statistics
August Temperature
HAZEN (18.6 miles)
Lowest 5 August, 2026
41 °FAverage August
69.2 °FHighest 1 August, 2026
100.4 °F
Climate (2021–2026)
HAZEN (18.6 miles)
Average Low 2021–2026
30.4 °FAverage 2021–2026
43.1 °FAverage High 2021–2026
55 °F