Updated October 2026
Arkansas Post National Memorial Weather by Month
Arkansas Post National Memorial is warmest in July, when the nearest NOAA climate station averages a high of 90°F and a low of 73°F, and coldest in January, with an average high of 52°F and an average low of 35°F. December is the wettest month, with about 6 inches of precipitation. Snowfall is heaviest in January, at about 0.7 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, 2.5 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Arkansas Post National Memorial can differ from these, particularly with elevation.
Warmest month
Jul
90°F avg high
Coldest month
Jan
35°F avg low
Wettest month
Dec
6.0 in avg
Snowiest month
Jan
0.7 in avg
Longest days
Jun
14.3 h of daylight
Average weather at Arkansas Post by month
| Month | Avg high | Avg low | Precipitation | Snowfall | Daylight |
|---|---|---|---|---|---|
| January | 52°F | 35°F | 4.8 in | 0.7 in | 10.0 h |
| February | 57°F | 39°F | 5.2 in | 0.3 in | 10.8 h |
| March | 65°F | 46°F | 5.5 in | 0.4 in | 11.7 h |
| April | 73°F | 54°F | 5.8 in | 0.0 in | 12.9 h |
| May | 81°F | 63°F | 5.0 in | 0.0 in | 13.8 h |
| June | 87°F | 70°F | 3.3 in | 0.0 in | 14.3 h |
| July | 90°F | 73°F | 3.0 in | 0.0 in | 14.1 h |
| August | 90°F | 72°F | 3.4 in | 0.0 in | 13.3 h |
| September | 85°F | 66°F | 2.6 in | 0.0 in | 12.2 h |
| October | 75°F | 55°F | 4.5 in | 0.0 in | 11.1 h |
| November | 62°F | 45°F | 4.4 in | 0.0 in | 10.2 h |
| December | 54°F | 38°F | 6.0 in | 0.1 in | 9.7 h |
| Year total | 53.5 in | 1.5 in |
NOAA 1991–2020 climate normals from station USC00030240, 2.5 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Arkansas Post is at that time of year.
Arkansas Post weather by season
Winter: December to February
Average highs bottom out at 52°F in January, between 54°F in December and 57°F in February, with average lows between 35°F and 39°F. Together the three months average 16 inches of precipitation, about 30% of the yearly total. Snowfall averages about 1.1 inches for the season, most of it in January. Daylight is at its shortest, about 9.7 hours in December.
Spring: March to May
Average highs climb from 65°F in March to 81°F in May, with average lows between 46°F and 63°F. Together the three months average 16.3 inches of precipitation, about 30% of the yearly total and more than in any other season. Snowfall averages about 0.4 inches for the season. Daylight lengthens from about 11.7 hours in March to 13.8 in May.
Summer: June to August
Average highs climb from 87°F in June to 90°F in August, with average lows between 70°F and 73°F. The average high is 90°F or hotter in July and August. Together the three months average 9.7 inches of precipitation, about 18% of the yearly total and less than in any other season. Daylight is at its longest, about 14.3 hours in June.
Fall: September to November
Average highs fall from 85°F in September to 62°F in November, with average lows between 45°F and 66°F. Together the three months average 11.5 inches of precipitation, about 21% of the yearly total. Daylight shortens from about 12.2 hours in September to 10.2 in November.
What the National Park Service says about the weather
Arkansas shares the same climate classification as the rest of the southeastern United States: humid subtropical. This type of climate features relatively mild winters and hot, steamy summers.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Arkansas Post
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 34.00°N, 91.31°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 Arkansas Post National Memorial →
Weather and crowds together
July, the warmest month, sees about 1.5× the visitors of the park's average month. May is the busiest month of the year and January the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Arkansas Post National Memorial. For hotels, cabins and rentals close to the park, see where to stay near Arkansas Post.
Where to stay near Arkansas Post
Picked a month for Arkansas Post National Memorial? Compare hotels, cabins and vacation rentals near the park with live availability and prices.
Top-rated places to stay near Arkansas Post
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Frequently Asked Questions
July is the warmest month at Arkansas Post National Memorial, with an average high of 90°F and an average low of 73°F. That is the 1991–2020 average at the nearest long-record NOAA station, 2.5 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Arkansas Post National Memorial, with an average low of 35°F and an average high of 52°F, based on NOAA 1991–2020 climate normals.
December is the wettest month, with about 6 inches of precipitation. September is the driest, at about 2.6 inches. The station records about 53.5 inches of precipitation in an average year.
Yes. The nearest long-record NOAA station, 2.5 miles from the park's reference point, averages about 1.5 inches of snow a year. January is the snowiest month, at about 0.7 inches. The station averages at least a tenth of an inch of snow in 4 of the 12 months.
Weather at nearby parks
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106 mi away · warmest in July (93°F)
116 mi away · warmest in August (92°F)
131 mi away · warmest in August (92°F)
132 mi away · warmest in August (91°F)
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00030240), 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.