Temperatures vary quite a bit at our elevation (6,300-6,800 feet above sea level) and are usually much cooler than other areas of Texas.

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Current Weather
Jeff Davis, US
1:46 pm, Jun 30, 2026
temperature icon 79°F
clear sky
Humidity: 53 %
Pressure: 1013 mb
Wind: 3 mph
Wind Gust: 9 mph
Clouds: 5%
Visibility: 6 mi
Sunrise: 6:56 am
Sunset: 9:02 pm
Weather from OpenWeatherMap

Live Cameras

Check out live weather conditions at McDonald Observatory!

Weather Links

Check out these links for weather forecasts and satellite views of cloud coverage.

Monthly Climate Data

The below table lists historical climate data, courtesy of the Western Regional Climate Center. Please note these are all averages; therefore, the low temperature on a particular night can be much lower (for example in the 20s or teens during the winter).

Monthly Averages, 1935-2016

Month
Avg High (°F)
Avg Low (°F)
Avg Rain (in)
Avg Snow (in)
Jan
53.5
32.0
0.68
1.9
Feb
56.9
33.9
0.49
0.8
Mar
63.7
38.2
0.40
0.2
Apr
71.4
45.2
0.50
0.1
May
78.6
52.4
1.63
0
Jun
84.5
58.2
2.49
0
Jul
82.7
58.9
3.82
0
Aug
81.3
58.4
3.69
0
Sep
76.6
54.4
2.95
0
Oct
70.5
48.0
1.61
0.1
Nov
61.2
38.7
0.61
0.4
Dec
54.4
33.6
0.60
1.2

 

What to Wear

For outdoor summer programs, make sure you bring a light jacket and long pants.

For fall, winter, and early spring programs, layer your attire and bring a warm coat, thermals, gloves, and something to keep your head warm. If you need warmer clothing than what you arrived with, our gift shop sells sweatshirts, blankets, and other cozy gear.

What Happens If It’s Cloudy

We will take every reasonable opportunity to present sky-viewing programs as originally planned. In the event of cloudy or inclement weather, we provide alternative programming options, which are unique to each.