Updated October 2026
Big Thicket National Preserve Weather by Month
Big Thicket National Preserve is warmest in July, when the nearest NOAA climate station averages a high of 95°F and a low of 73°F, and coldest in January, with an average high of 63°F and an average low of 38°F. June is the wettest month, with about 5.8 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, 6.4 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Big Thicket National Preserve can differ from these, particularly with elevation.
Warmest month
Jul
95°F avg high
Coldest month
Jan
38°F avg low
Wettest month
Jun
5.8 in avg
Longest days
Jun
14.0 h of daylight
Average weather at Big Thicket by month
| Month | Avg high | Avg low | Precipitation | Daylight |
|---|---|---|---|---|
| January | 63°F | 38°F | 4.7 in | 10.2 h |
| February | 66°F | 42°F | 4.1 in | 10.9 h |
| March | 73°F | 49°F | 4.1 in | 11.8 h |
| April | 80°F | 55°F | 4.5 in | 12.7 h |
| May | 87°F | 64°F | 4.5 in | 13.5 h |
| June | 92°F | 70°F | 5.8 in | 14.0 h |
| July | 95°F | 73°F | 4.1 in | 13.8 h |
| August | 95°F | 72°F | 4.3 in | 13.1 h |
| September | 90°F | 67°F | 4.5 in | 12.2 h |
| October | 83°F | 56°F | 5.6 in | 11.2 h |
| November | 72°F | 47°F | 5.4 in | 10.4 h |
| December | 64°F | 40°F | 5.4 in | 10.0 h |
| Year total | 57.0 in |
NOAA 1991–2020 climate normals from station USC00419754, 6.4 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 Big Thicket is at that time of year.
Big Thicket weather by season
Winter: December to February
Average highs bottom out at 63°F in January, between 64°F in December and 66°F in February, with average lows between 38°F and 42°F. Together the three months average 14.2 inches of precipitation, about 25% of the yearly total. Daylight is at its shortest, about 10.0 hours in December.
Spring: March to May
Average highs climb from 73°F in March to 87°F in May, with average lows between 49°F and 64°F. Together the three months average 13.1 inches of precipitation, about 23% of the yearly total and less than in any other season. Daylight lengthens from about 11.8 hours in March to 13.5 in May.
Summer: June to August
Average highs climb from 92°F in June to 95°F in August, with average lows between 70°F and 73°F. The average high is 90°F or hotter in all three months. Together the three months average 14.2 inches of precipitation, about 25% of the yearly total. Daylight is at its longest, about 14.0 hours in June.
Fall: September to November
Average highs fall from 90°F in September to 72°F in November, with average lows between 47°F and 67°F. The average high is 90°F or hotter in September. Together the three months average 15.5 inches of precipitation, about 27% of the yearly total and more than in any other season. Daylight shortens from about 12.2 hours in September to 10.4 in November.
What the National Park Service says about the weather
SPRING: Expect comfortable weather in Mar/Apr, with heat & humidity increasing in May. SUMMER: High heat, high humidity, and thunderstorms are common. Hurricane & tropical storm activity peaks in late summer. FALL: Early fall can be hot, while Oct/Nov bring pleasant temperatures. WINTER: Mild, chilly weather with occasional cold spells. Snow is rare. Some Dec/Jan/Feb nights may dip below freezing.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Big Thicket
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 30.46°N, 94.39°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 Big Thicket National Preserve →
Weather and crowds together
July, the warmest month, sees about 1.1× the visitors of the park's average month. October 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 Big Thicket National Preserve. For hotels, cabins and rentals close to the park, see where to stay near Big Thicket.
Where to stay near Big Thicket
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Top-rated places to stay near Big Thicket
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 Big Thicket National Preserve, with an average high of 95°F and an average low of 73°F. That is the 1991–2020 average at the nearest long-record NOAA station, 6.4 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Big Thicket National Preserve, with an average low of 38°F and an average high of 63°F, based on NOAA 1991–2020 climate normals.
June is the wettest month, with about 5.8 inches of precipitation. February, March and July are the driest, at about 4.1 inches each. The station records about 57 inches of precipitation in an average year.
Rarely, by the station's record. The nearest long-record NOAA station, 6.4 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 USC00419754), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (1981–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.