Updated October 2026
Herbert Hoover National Historic Site Weather by Month
Herbert Hoover National Historic Site is warmest in July, when the nearest NOAA climate station averages a high of 84°F and a low of 63°F, and coldest in January, with an average high of 29°F and an average low of 12°F. June is the wettest month, with about 5.5 inches of precipitation. Snowfall is heaviest in January, at about 7.6 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, 8.9 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Herbert Hoover National Historic Site can differ from these, particularly with elevation.
Warmest month
Jul
84°F avg high
Coldest month
Jan
12°F avg low
Wettest month
Jun
5.5 in avg
Snowiest month
Jan
7.6 in avg
Longest days
Jun
15.0 h of daylight
Average weather at Herbert Hoover by month
| Month | Avg high | Avg low | Precipitation | Snowfall | Daylight |
|---|---|---|---|---|---|
| January | 29°F | 12°F | 1.1 in | 7.6 in | 9.3 h |
| February | 34°F | 16°F | 1.4 in | 7.5 in | 10.4 h |
| March | 48°F | 27°F | 2.3 in | 3.2 in | 11.7 h |
| April | 62°F | 37°F | 3.9 in | 0.5 in | 13.1 h |
| May | 72°F | 49°F | 5.1 in | 0.0 in | 14.4 h |
| June | 81°F | 59°F | 5.5 in | 0.0 in | 15.0 h |
| July | 84°F | 63°F | 4.6 in | 0.0 in | 14.7 h |
| August | 82°F | 60°F | 4.3 in | 0.0 in | 13.7 h |
| September | 76°F | 52°F | 3.5 in | 0.0 in | 12.3 h |
| October | 63°F | 40°F | 3.0 in | 0.4 in | 10.8 h |
| November | 48°F | 28°F | 2.3 in | 1.1 in | 9.6 h |
| December | 34°F | 18°F | 1.6 in | 7.2 in | 9.0 h |
| Year total | 38.6 in | 27.5 in |
NOAA 1991–2020 climate normals from station USC00134101, 8.9 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Herbert Hoover is at that time of year.
Herbert Hoover weather by season
Winter: December to February
Average highs bottom out at 29°F in January, between 34°F in December and 34°F in February, with average lows between 12°F and 18°F. The average low is at or below freezing in all three months. Together the three months average 4.1 inches of precipitation, about 11% of the yearly total and less than in any other season. Snowfall averages about 22 inches for the season. Daylight is at its shortest, about 9.0 hours in December.
Spring: March to May
Average highs climb from 48°F in March to 72°F in May, with average lows between 27°F and 49°F. The average low is at or below freezing in March. Together the three months average 11.3 inches of precipitation, about 29% of the yearly total. Snowfall averages about 3.7 inches for the season, most of it in March. Daylight lengthens from about 11.7 hours in March to 14.4 in May.
Summer: June to August
Average highs peak at 84°F in July, between 81°F in June and 82°F in August, with average lows between 59°F and 63°F. Together the three months average 14.4 inches of precipitation, about 37% of the yearly total and more than in any other season. Daylight is at its longest, about 15.0 hours in June.
Fall: September to November
Average highs fall from 76°F in September to 48°F in November, with average lows between 28°F and 52°F. The average low is at or below freezing in November. Together the three months average 8.8 inches of precipitation, about 23% of the yearly total. Snowfall averages about 1.5 inches for the season, most of it in November. Daylight shortens from about 12.3 hours in September to 9.6 in November.
What the National Park Service says about the weather
Spring and fall are mild with moderate temperatures. Average high temperatures in the spring and fall are between 50° and 60° F, with lows from 40° F to 50° F. Summer is hot and humid with average highs around 85° F. Winter can be cold, windy, and snowy with highs averaging 30° F or lower. Rain and thunderstorms are most frequent in the spring and summer.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Herbert Hoover
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 41.67°N, 91.35°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 Herbert Hoover National Historic Site →
Weather and crowds together
July, the warmest month, sees about 1.4× the visitors of the park's average month. August is the busiest month of the year and February the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Herbert Hoover National Historic Site. For hotels, cabins and rentals close to the park, see where to stay near Herbert Hoover.
Where to stay near Herbert Hoover
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Frequently Asked Questions
July is the warmest month at Herbert Hoover National Historic Site, with an average high of 84°F and an average low of 63°F. That is the 1991–2020 average at the nearest long-record NOAA station, 8.9 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Herbert Hoover National Historic Site, with an average low of 12°F and an average high of 29°F, based on NOAA 1991–2020 climate normals.
June is the wettest month, with about 5.5 inches of precipitation. January is the driest, at about 1.1 inches. The station records about 38.6 inches of precipitation in an average year.
Yes. The nearest long-record NOAA station, 8.9 miles from the park's reference point, averages about 28 inches of snow a year. January is the snowiest month, at about 7.6 inches. The station averages at least a tenth of an inch of snow in 7 of the 12 months.
Weather at nearby parks
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00134101), 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.