Updated October 2026
Amistad National Recreation Area Weather by Month
Amistad National Recreation Area is warmest in August, when the nearest NOAA climate station averages a high of 97°F and a low of 74°F, and coldest in January, with an average high of 63°F and an average low of 40°F. September is the wettest month, with about 3.2 inches of precipitation.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 5.9 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Amistad National Recreation Area can differ from these, particularly with elevation.
Warmest month
Aug
97°F avg high
Coldest month
Jan
40°F avg low
Wettest month
Sep
3.2 in avg
Longest days
Jun
13.9 h of daylight
Average weather at Amistad by month
| Month | Avg high | Avg low | Precipitation | Daylight |
|---|---|---|---|---|
| January | 63°F | 40°F | 0.7 in | 10.3 h |
| February | 68°F | 43°F | 0.7 in | 11.0 h |
| March | 76°F | 51°F | 1.5 in | 11.8 h |
| April | 83°F | 58°F | 1.3 in | 12.7 h |
| May | 89°F | 66°F | 2.6 in | 13.5 h |
| June | 95°F | 72°F | 1.8 in | 13.9 h |
| July | 97°F | 74°F | 1.9 in | 13.7 h |
| August | 97°F | 74°F | 2.5 in | 13.1 h |
| September | 90°F | 69°F | 3.2 in | 12.2 h |
| October | 82°F | 60°F | 1.7 in | 11.3 h |
| November | 71°F | 49°F | 1.0 in | 10.5 h |
| December | 63°F | 41°F | 0.7 in | 10.1 h |
| Year total | 19.6 in |
NOAA 1991–2020 climate normals from station USC00410225, 5.9 miles from the park's reference point. Snowfall at the station totals about 0.1 inches in an average year. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Amistad is at that time of year.
Amistad weather by season
Winter: December to February
Average highs climb from 63°F in December to 68°F in February, with average lows between 40°F and 43°F. Together the three months average 2.1 inches of precipitation, about 11% of the yearly total and less than in any other season. Daylight is at its shortest, about 10.1 hours in December.
Spring: March to May
Average highs climb from 76°F in March to 89°F in May, with average lows between 51°F and 66°F. Together the three months average 5.4 inches of precipitation, about 28% of the yearly total. Daylight lengthens from about 11.8 hours in March to 13.5 in May.
Summer: June to August
Average highs hold near 96°F in all three months, with average lows near 73°F. The average high is 90°F or hotter in all three months. Together the three months average 6.2 inches of precipitation, about 32% of the yearly total and more than in any other season. Daylight is at its longest, about 13.9 hours in June.
Fall: September to November
Average highs fall from 90°F in September to 71°F in November, with average lows between 49°F and 69°F. The average high is 90°F or hotter in September. Together the three months average 5.9 inches of precipitation, about 30% of the yearly total. Daylight shortens from about 12.2 hours in September to 10.5 in November.
What the National Park Service says about the weather
Weather in Southwest Texas can change in a matter of minutes. It is best to check the local weather report. Amistad National Recreation Area usually has hot summers and mild winters. For more information, please visit the park's Current Conditions page at https://www.nps.gov/amis/planyourvisit/conditions.htm.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Amistad
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 29.54°N, 101.08°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 Amistad National Recreation Area →
Weather and crowds together
August, the warmest month, sees about 1.0× 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 Amistad National Recreation Area. For hotels, cabins and rentals close to the park, see where to stay near Amistad.
Where to stay near Amistad
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Top-rated places to stay near Amistad
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Frequently Asked Questions
August is the warmest month at Amistad National Recreation Area, with an average high of 97°F and an average low of 74°F. That is the 1991–2020 average at the nearest long-record NOAA station, 5.9 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Amistad National Recreation Area, with an average low of 40°F and an average high of 63°F, based on NOAA 1991–2020 climate normals.
September is the wettest month, with about 3.2 inches of precipitation. January, February and December are the driest, at about 0.7 inches each. The station records about 19.6 inches of precipitation in an average year.
Rarely, by the station's record. The nearest long-record NOAA station, 5.9 miles from the park's reference point, totals about 0.1 inches of snow in an average year.
Weather at nearby parks
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00410225), 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.