Updated October 2026
Big Bend National Park Weather by Month
Big Bend National Park is warmest in June, when the nearest NOAA climate station averages a high of 94°F and a low of 68°F, and coldest in January, with an average high of 61°F and an average low of 37°F. July is the wettest month, with about 2.3 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, 2.5 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Big Bend National Park can differ from these, particularly with elevation.
Warmest month
Jun
94°F avg high
Coldest month
Jan
37°F avg low
Wettest month
Jul
2.3 in avg
Longest days
Jun
13.9 h of daylight
Average weather at Big Bend by month
| Month | Avg high | Avg low | Precipitation | Daylight |
|---|---|---|---|---|
| January | 61°F | 37°F | 0.5 in | 10.3 h |
| February | 66°F | 41°F | 0.4 in | 11.0 h |
| March | 74°F | 47°F | 0.4 in | 11.8 h |
| April | 82°F | 54°F | 0.5 in | 12.7 h |
| May | 89°F | 62°F | 1.3 in | 13.5 h |
| June | 94°F | 68°F | 1.7 in | 13.9 h |
| July | 92°F | 70°F | 2.3 in | 13.7 h |
| August | 91°F | 69°F | 1.9 in | 13.1 h |
| September | 86°F | 63°F | 1.7 in | 12.2 h |
| October | 80°F | 55°F | 1.2 in | 11.3 h |
| November | 69°F | 45°F | 0.7 in | 10.5 h |
| December | 62°F | 38°F | 0.5 in | 10.1 h |
| Year total | 13.1 in |
NOAA 1991–2020 climate normals from station USC00416792, 2.5 miles from the park's reference point. Snowfall at the station totals about 0.4 inches in an average year. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Big Bend is at that time of year.
Big Bend weather by season
Winter: December to February
Average highs bottom out at 61°F in January, between 62°F in December and 66°F in February, with average lows between 37°F and 41°F. Together the three months average 1.4 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 74°F in March to 89°F in May, with average lows between 47°F and 62°F. Together the three months average 2.2 inches of precipitation, about 17% of the yearly total. Daylight lengthens from about 11.8 hours in March to 13.5 in May.
Summer: June to August
Average highs fall from 94°F in June to 91°F in August, with average lows near 69°F. The average high is 90°F or hotter in all three months. Together the three months average 5.9 inches of precipitation, about 45% 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 86°F in September to 69°F in November, with average lows between 45°F and 63°F. Together the three months average 3.6 inches of precipitation, about 27% 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
Big Bend is in the Chihuahuan Desert. Sunshine is abundant year-round. Spring (March) is typically warm and pleasant and is the park's busiest season. Summer heat begins in May. It is extremely HOT. Temperatures vary greatly between the desert which is usually well above 100 degrees F by late morning, and the Chisos Mountains, which can be 10-15 degrees cooler. May - August are the hottest months. Fall and Winter (Nov-Feb) are mild and pleasant, but some freezing does occur. Snow is rare.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Big Bend
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 29.30°N, 103.23°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 Bend National Park →
Weather and crowds together
June, the warmest month, sees about 0.6× the visitors of the park's average month. March is the busiest month of the year and August the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Big Bend National Park. For hotels, cabins and rentals close to the park, see where to stay near Big Bend.
Where to stay near Big Bend
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Frequently Asked Questions
June is the warmest month at Big Bend National Park, with an average high of 94°F and an average low of 68°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 Big Bend National Park, with an average low of 37°F and an average high of 61°F, based on NOAA 1991–2020 climate normals.
July is the wettest month, with about 2.3 inches of precipitation. February and March are the driest, at about 0.4 inches each. The station records about 13.1 inches of precipitation in an average year.
Rarely, by the station's record. The nearest long-record NOAA station, 2.5 miles from the park's reference point, totals about 0.4 inches of snow in an average year.
Weather at nearby parks
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00416792), 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.