Park climate1991–2020 climate normals277 m source elevationNASA POWER

Long term monthly climate normals for temperature, precipitation, and wind speeds

Lyndon B. Johnson National Grassland Twelve Month Climate Averages and Atmospheric Data

Name: Lyndon B. Johnson National Grassland monthly climate normals
Creator: NASA POWER

Review the established twelve-month climate profile for Lyndon B. Johnson National Grassland, based on long-term data from a representative point in Wise County. Each monthly summary includes average minimum and maximum temperatures, daily precipitation rates, relative humidity, wind speed, and daylight hours. These climate normals for the 1991 to 2020 period provide a technical baseline for understanding atmospheric patterns within this protected landscape.

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A flat-style digital illustration depicting a sunny mountain landscape featuring steep cliffs, a waterfall flowing into a river, evergreen and deciduous trees, and clouds.

Annual climate pattern

Monthly average temperatures and daily precipitation rates across the twelve-month cycle

Lyndon B. Johnson National Grassland Annual Climate Normals and Temperature Patterns

Long-term climatology records for Lyndon B. Johnson National Grassland track average minimum and maximum temperatures moving from winter lows to summer peaks across the twelve calendar months. Average daily precipitation rates accompany these thermal shifts at a representative coordinate, summarising multi-year climate normals without reflecting live weather conditions.

Mean temperatureAverage minimum–maximum rangePrecipitation

Annual mean: 17.8 °C
Warmest month: July
Coolest month: January
Wettest month: May

Twelve-month climate

Track long-term monthly temperature bounds, average daily precipitation rates, relative humidity, wind speed, and daylight hours across the calendar year.

Lyndon B. Johnson National Grassland Weather by Month: Complete Twelve-Month Climate Records

Examine average minimum, mean, and maximum temperatures alongside average daily precipitation rates for every month of the year at a representative park coordinate. Compare multi-year climate normals across humidity, wind velocity, and calculated daylight duration to evaluate seasonal environmental patterns.

	Mean temperature	Precipitation	Humidity	Wind speed	Daylight
January	5.2 °C-7.3° to 22°	1.5 mm/day	73.9%	4.7 m/s	10.1 hours
February	7.9 °C-5.8° to 24.9°	2 mm/day	72.8%	4.9 m/s	10.8 hours
March	12.6 °C-3.5° to 28.6°	2.4 mm/day	71%	5.2 m/s	11.8 hours
April	17.5 °C2° to 32.1°	2.7 mm/day	67.8%	5.4 m/s	12.9 hours
May	22.6 °C8.1° to 35.7°	3.8 mm/day	69.5%	4.9 m/s	13.7 hours
June	27.2 °C15.9° to 38.5°	3.3 mm/day	66%	4.5 m/s	14.2 hours
July	30.1 °C20° to 41.6°	1.9 mm/day	56.2%	4.1 m/s	14 hours
August	29.9 °C19.2° to 41.2°	2.1 mm/day	55.1%	3.8 m/s	13.2 hours
September	25 °C11.2° to 37.8°	2.6 mm/day	62%	3.8 m/s	12.2 hours
October	18.5 °C2.8° to 33.7°	3.1 mm/day	65%	4.5 m/s	11.1 hours
November	11.4 °C-3.3° to 27°	1.9 mm/day	70.9%	4.7 m/s	10.3 hours
December	6.2 °C-6.8° to 22.9°	1.9 mm/day	74%	4.6 m/s	9.8 hours

Compare two months

See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.

First month

Second month

Mean temperature: January: 5.2 °C; July: 30.1 °C; Change from January to July: +24.9 °C
Precipitation: January: 1.5 mm/day; July: 1.9 mm/day; Change from January to July: +0.4 mm/day
Daylight: January: 10.1 hours; July: 14 hours; Change from January to July: +3.9 hours

Calculated climate highlights

Comparing twelve stored monthly averages for temperature, precipitation, wind, humidity, and daylight duration

Calculated Monthly Climate Highlights and Extremes for Lyndon B. Johnson National Grassland

Calculated monthly highlights summarize long-term climatology normals derived from stored records for a representative coordinate at Lyndon B. Johnson National Grassland. These comparative metrics establish baseline annual patterns across temperature, precipitation, wind, humidity, and daylight without representing observed weather extremes.

Warmest month: July30.1 °C
Coolest month: January5.2 °C
Wettest month: May3.8 mm/day
Driest month: January1.5 mm/day
Most humid month: December74%
Windiest month: April5.4 m/s
Longest daylight: June14.2 hours

Interactive climate map

National park climate map

Open the climate map to compare monthly temperature, precipitation, and other averages.

Global National Park Climate Map

Other park climates

Explore monthly temperature and precipitation data across diverse protected landscapes and geographic settings.

Comparing Lyndon B. Johnson National Grassland Climate Profiles with Other Protected Areas

Examine long-term monthly temperature normals, precipitation rhythms, humidity levels, wind metrics, and daylight patterns across distinct protected landscapes. Comparing these standardized atmospheric records provides broader contextual insight into regional weather variations without implying equivalent conditions.