Grant Marsh Wildlife Management Area Weather Forecast
- 49
- 74
Rain Showers
- 43
- 62
Rain Showers Likely
- 45
- 73
Chance Thunderstorms
- 45
- 75
Slight Chance Thunderstorms
- 48
- 76
Partly Sunny
- 48
- 77
Chance Thunderstorms
- 50
- 81
Mostly Sunny
Today 30 May Northern Big Horn
Scattered Showers and Thunderstorms early in the Afternoon, then Showers and scattered Thunderstorms late in the afternoon. Cooler. Some Thunderstorms may produce heavy rainfall. Highs in the lower 70s. Northwest Winds 5 to 10 Mph. Chance of precipitation 90 percent.
Tonight 30 May Northern Big Horn
Cloudy. Slight chance of Showers and Thunderstorms in the late evening and Overnight, then slight chance of rain Showers after 3 am. Lows in the upper 40s. West Winds 5 to 15 Mph. Chance of precipitation 20 percent.
Grant Marsh Wildlife Management Area Temperature Statistics
May Temperature
Billings, Billings Logan International Airport (45.4 miles)
Lowest 6 May, 2026
28.7 °FAverage May
59.2 °FHighest 13 May, 2026
95.6 °F
Climate (2021–Present)
Billings, Billings Logan International Airport (45.4 miles)
Average Low 2021–2026
39.1 °FAverage 2021–2026
50.1 °FAverage High 2021–2026
61.4 °F