Updated October 2026
Lyndon B Johnson National Historical Park Weather by Month
Lyndon B Johnson National Historical Park is warmest in August, when the nearest NOAA climate station averages a high of 97°F and a low of 71°F, and coldest in January, with an average high of 62°F and an average low of 35°F. May is the wettest month, with about 4 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, 12.2 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Lyndon B Johnson National Historical Park can differ from these, particularly with elevation.
Warmest month
Aug
97°F avg high
Coldest month
Jan
35°F avg low
Wettest month
May
4.0 in avg
Longest days
Jun
13.9 h of daylight
Average weather at Lyndon B Johnson by month
| Month | Avg high | Avg low | Precipitation | Daylight |
|---|---|---|---|---|
| January | 62°F | 35°F | 2.3 in | 10.3 h |
| February | 66°F | 39°F | 2.0 in | 10.9 h |
| March | 73°F | 47°F | 2.6 in | 11.8 h |
| April | 80°F | 53°F | 2.8 in | 12.7 h |
| May | 86°F | 63°F | 4.0 in | 13.5 h |
| June | 92°F | 69°F | 3.2 in | 13.9 h |
| July | 96°F | 71°F | 2.2 in | 13.8 h |
| August | 97°F | 71°F | 2.2 in | 13.1 h |
| September | 90°F | 64°F | 3.4 in | 12.2 h |
| October | 82°F | 54°F | 3.6 in | 11.2 h |
| November | 71°F | 45°F | 3.0 in | 10.4 h |
| December | 64°F | 37°F | 1.9 in | 10.1 h |
| Year total | 33.2 in |
NOAA 1991–2020 climate normals from station USC00414605, 12.2 miles from the park's reference point. Snowfall at the station totals about 0.2 inches in an average year. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Lyndon B Johnson is at that time of year.
Lyndon B Johnson weather by season
Winter: December to February
Average highs bottom out at 62°F in January, between 64°F in December and 66°F in February, with average lows between 35°F and 39°F. Together the three months average 6.2 inches of precipitation, about 19% 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 73°F in March to 86°F in May, with average lows between 47°F and 63°F. Together the three months average 9.4 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 climb from 92°F in June to 97°F in August, with average lows near 70°F. The average high is 90°F or hotter in all three months. Together the three months average 7.6 inches of precipitation, about 23% of the yearly total. 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 45°F and 64°F. The average high is 90°F or hotter in September. Together the three months average 10 inches of precipitation, about 30% 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
Overall, the park enjoys a sunny, mild climate during three seasons of the year. Spring: Temperatures range from 45 F to 85 F (7 C/29 C). Rain is common in April and May. Summer: Temperatures range from 70 F to 95 F (21 C/35 C). Temperatures can exceed 100 F (38 C) in July and August. Lightweight clothing and sunscreen are advisable. Be prepared with plenty of water. Fall: Temperatures range from 45 F to 85 F (7 C/29 C). Winter: Temperatures range from 35 F to 65 F (2 C/18 C) . Snow and ice are rare.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Lyndon B Johnson
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 30.25°N, 98.61°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 Lyndon B Johnson National Historical Park →
Weather and crowds together
August, the warmest month, is also the quietest, with about 0.7× the visitors of the park's average month. March is the busiest. To see those crowds set against the weather for all twelve months, read the best time to visit Lyndon B Johnson National Historical Park. For hotels, cabins and rentals close to the park, see where to stay near Lyndon B Johnson.
Where to stay near Lyndon B Johnson
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Frequently Asked Questions
August is the warmest month at Lyndon B Johnson National Historical Park, with an average high of 97°F and an average low of 71°F. That is the 1991–2020 average at the nearest long-record NOAA station, 12.2 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Lyndon B Johnson National Historical Park, with an average low of 35°F and an average high of 62°F, based on NOAA 1991–2020 climate normals.
May is the wettest month, with about 4 inches of precipitation. December is the driest, at about 1.9 inches. The station records about 33.2 inches of precipitation in an average year.
Rarely, by the station's record. The nearest long-record NOAA station, 12.2 miles from the park's reference point, totals about 0.2 inches of snow in an average year.
Weather at nearby parks
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Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00414605), 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.