Updated October 2026
Little Bighorn Battlefield National Monument Weather by Month
Little Bighorn Battlefield National Monument is warmest in July, when the nearest NOAA climate station averages a high of 91°F and a low of 56°F, and coldest in January, with an average high of 36°F and an average low of 11°F. May is the wettest month, with about 2.5 inches of precipitation. Snowfall is heaviest in December, at about 6.3 inches.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 15.2 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Little Bighorn Battlefield National Monument can differ from these, particularly with elevation.
Warmest month
Jul
91°F avg high
Coldest month
Jan
11°F avg low
Wettest month
May
2.5 in avg
Snowiest month
Dec
6.3 in avg
Longest days
Jun
15.5 h of daylight
Average weather at Little Bighorn Battlefield by month
| Month | Avg high | Avg low | Precipitation | Snowfall | Daylight |
|---|---|---|---|---|---|
| January | 36°F | 11°F | 0.5 in | 6.0 in | 8.9 h |
| February | 41°F | 15°F | 0.6 in | 6.2 in | 10.1 h |
| March | 53°F | 23°F | 0.9 in | 3.4 in | 11.6 h |
| April | 62°F | 32°F | 1.5 in | 1.3 in | 13.3 h |
| May | 71°F | 41°F | 2.5 in | 0.0 in | 14.7 h |
| June | 81°F | 50°F | 1.9 in | 0.0 in | 15.5 h |
| July | 91°F | 56°F | 1.3 in | 0.0 in | 15.2 h |
| August | 90°F | 53°F | 0.9 in | 0.0 in | 13.9 h |
| September | 79°F | 44°F | 1.4 in | 0.0 in | 12.3 h |
| October | 64°F | 33°F | 1.4 in | 1.6 in | 10.7 h |
| November | 48°F | 22°F | 0.5 in | 3.1 in | 9.2 h |
| December | 38°F | 13°F | 0.5 in | 6.3 in | 8.5 h |
| Year total | 13.9 in | 27.9 in |
NOAA 1991–2020 climate normals from station USC00243915, 15.2 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Little Bighorn Battlefield is at that time of year.
Little Bighorn Battlefield weather by season
Winter: December to February
Average highs bottom out at 36°F in January, between 38°F in December and 41°F in February, with average lows between 11°F and 15°F. The average low is at or below freezing in all three months. Together the three months average 1.6 inches of precipitation, about 12% of the yearly total and less than in any other season. Snowfall averages about 19 inches for the season. Daylight is at its shortest, about 8.5 hours in December.
Spring: March to May
Average highs climb from 53°F in March to 71°F in May, with average lows between 23°F and 41°F. The average low is at or below freezing in March and April. Together the three months average 4.9 inches of precipitation, about 35% of the yearly total and more than in any other season. Snowfall averages about 4.7 inches for the season, most of it in March. Daylight lengthens from about 11.6 hours in March to 14.7 in May.
Summer: June to August
Average highs peak at 91°F in July, between 81°F in June and 90°F in August, with average lows between 50°F and 56°F. The average high is 90°F or hotter in July and August. Together the three months average 4.1 inches of precipitation, about 29% of the yearly total. Daylight is at its longest, about 15.5 hours in June.
Fall: September to November
Average highs fall from 79°F in September to 48°F in November, with average lows between 22°F and 44°F. The average low is at or below freezing in November. Together the three months average 3.3 inches of precipitation, about 24% of the yearly total. Snowfall averages about 4.7 inches for the season, most of it in November. Daylight shortens from about 12.3 hours in September to 9.2 in November.
What the National Park Service says about the weather
Little Bighorn Battlefield National Monument average weather: Spring: 50-60 (F) degree days/ 30+/- (F) degree nights Summer: 70-100 (F) degree days/ 45-60+ (F) degree nights Fall: 40-50 (F) degree days/ 25+/- (F) degree nights Winter: 20-30 (F) degree days/ 0+/- (F) degree nights
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Little Bighorn Battlefield
Averages describe a typical month, not this week. For current conditions and the seven-day outlook, the National Weather Service issues a forecast for the park's reference point at 45.56°N, 107.42°W. It covers that one spot, so other elevations in the park can differ from it, as they do from the averages above.
National Weather Service forecast for Little Bighorn Battlefield National Monument →
Weather and crowds together
July is both the warmest month and the busiest, with about 2.9× the visitors of the park's average month. December is the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Little Bighorn Battlefield National Monument. For hotels, cabins and rentals close to the park, see where to stay near Little Bighorn Battlefield.
Where to stay near Little Bighorn Battlefield
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Frequently Asked Questions
July is the warmest month at Little Bighorn Battlefield National Monument, with an average high of 91°F and an average low of 56°F. That is the 1991–2020 average at the nearest long-record NOAA station, 15.2 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Little Bighorn Battlefield National Monument, with an average low of 11°F and an average high of 36°F, based on NOAA 1991–2020 climate normals.
May is the wettest month, with about 2.5 inches of precipitation. January, November and December are the driest, at about 0.5 inches each. The station records about 13.9 inches of precipitation in an average year.
Yes. The nearest long-record NOAA station, 15.2 miles from the park's reference point, averages about 28 inches of snow a year. December is the snowiest month, at about 6.3 inches. The station averages at least a tenth of an inch of snow in 7 of the 12 months.
Weather at nearby parks
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Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00243915), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (1979–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.