Air Resources Laboratory / Special Operations And Research Division (SORD)
Weather Advisories:
Nevada National Security Site Weather Forecast
Air Resources Laboratory/Special Operations and Research Division
1230 PST Tue Dec 23 2025
Official Sunrise Wednesday 655 PST
Official Sunset Wednesday 1633 PST
Forecaster: J Wood
.Forecast Summary...Several Pacific storms will provide gusty winds and rain tomorrow through Friday. Clouds will be on the increase tonight leading to rain developing tomorrow morning. Rain will then continue through the day and could be heavy at times. This is a mild system so precipitation will be in the form of rain even for the highest elevations. Showers will continue into tomorrow evening then decrease overnight. The next system arrives on Thursday with showers and gusty winds once again being observed. There is even a slight chance of thunderstorms. This system will be a little cooler so snow will be possible for the mesas and higher mountains. Scattered showers and gusty winds will continue into Friday. There will be a break in this active weather this weekend with only a few showers possible on Saturday. Looking ahead to next week, another Pacific storm could bring showers back to our area early next week.
---For The Nevada National Security Site---
.Tonight...Mostly cloudy with rain developing after midnight. Southeast winds 15 to 30 mph. Low temperatures 37 to 44 on the mesas, 45 to 50 on the dry lakes, 47 to 54 at the lower elevations, 52 at Mercury.
.Wednesday...Rain, heavy at times. Windy. Southeast winds 15 to 25 mph with gusts to 40 mph. High temperatures 41 to 48 on the mesas, 52 to 59 at the lower elevations, 55 at Mercury.
.Wednesday Night...Mostly cloudy with showers likely in the evening becoming isolated overnight. South winds 10 to 25 mph. Low temperatures 33 to 40 on the mesas, 45 to 50 on the dry lakes, 45 to 52 at the lower elevations, 49 at Mercury.
.Thursday...Mostly cloudy with scattered showers and a slight chance of afternoon thunderstorms. Windy. Snow level 7000 feet. South winds 15 to 25 mph with gusts to 40 mph. High temperatures 40 to 48 on the mesas, 53 to 60 at the lower elevations, 57 at Mercury.
.Friday...Mostly cloudy with scattered showers and windy. Snow level 6000 feet. Southwest winds 20 to 35 mph. Low temperatures 30 to 37 on the mesas, 40 to 45 on the dry lakes, 40 to 47 at the lower elevations, 45 at Mercury. High temperatures 37 to 44 on the mesas, 50 to 57 at the lower elevations, 54 at Mercury.
.Saturday...Partly cloudy with isolated showers. Snow level 5000 feet. Northwest winds 10 to 25 mph. Low temperatures 28 to 34 on the mesas, 37 to 42 on the dry lakes, 37 to 44 at the lower elevations, 42 at Mercury. High temperatures 37 to 44 on the mesas, 51 to 58 at the lower elevations, 55 at Mercury.
.Sunday...Mostly sunny. Northeast winds 10 to 25 mph. Low temperatures 23 to 30 on the mesas, 30 to 35 on the dry lakes, 33 to 40 at the lower elevations, 38 at Mercury. High temperatures 39 to 46 on the mesas, 52 to 58 at the lower elevations, 55 at Mercury.
.Monday...Mostly cloudy with a chance of showers. Northeast winds 10 to 25 mph. Low temperatures 26 to 32 on the mesas, 35 to 40 on the dry lakes, 35 to 41 at the lower elevations, 38 at Mercury. High temperatures 40 to 47 on the mesas, 54 to 61 at the lower elevations, 57 at Mercury
-End Forecast---J Wood
Weather questions or reports should be directed to the Duty Forecaster at 5-1255.
Air Resources Laboratory/Special Operations and Research Division
1230 PST Tue Dec 23 2025
Official Sunrise Wednesday 655 PST
Official Sunset Wednesday 1633 PST
Forecaster: J Wood
.A Special Weather Statement has been issued until 8 AM on December 26, 2025. .
NNSS Forecast Weather Threat Matrix
Wed 12/24
Thu 12/25
Fri 12/26
Sat 12/27
Sun 12/28
Mon 12/29
Wind/Rain.
Wind/Showers.
Wind/Showers..
Showers.
None.
Showers.
Threat/Impacts Legend
None/Low
Minor
Moderate
Major
.Forecast Summary...Several Pacific storms will provide gusty winds and rain tomorrow through Friday. Clouds will be on the increase tonight leading to rain developing tomorrow morning. Rain will then continue through the day and could be heavy at times. This is a mild system so precipitation will be in the form of rain even for the highest elevations. Showers will continue into tomorrow evening then decrease overnight. The next system arrives on Thursday with showers and gusty winds once again being observed. There is even a slight chance of thunderstorms. This system will be a little cooler so snow will be possible for the mesas and higher mountains. Scattered showers and gusty winds will continue into Friday. There will be a break in this active weather this weekend with only a few showers possible on Saturday. Looking ahead to next week, another Pacific storm could bring showers back to our area early next week.
---For The Nevada National Security Site---
.Tonight...Mostly cloudy with rain developing after midnight. Southeast winds 15 to 30 mph. Low temperatures 37 to 44 on the mesas, 45 to 50 on the dry lakes, 47 to 54 at the lower elevations, 52 at Mercury.
.Wednesday...Rain, heavy at times. Windy. Southeast winds 15 to 25 mph with gusts to 40 mph. High temperatures 41 to 48 on the mesas, 52 to 59 at the lower elevations, 55 at Mercury.
.Wednesday Night...Mostly cloudy with showers likely in the evening becoming isolated overnight. South winds 10 to 25 mph. Low temperatures 33 to 40 on the mesas, 45 to 50 on the dry lakes, 45 to 52 at the lower elevations, 49 at Mercury.
.Thursday...Mostly cloudy with scattered showers and a slight chance of afternoon thunderstorms. Windy. Snow level 7000 feet. South winds 15 to 25 mph with gusts to 40 mph. High temperatures 40 to 48 on the mesas, 53 to 60 at the lower elevations, 57 at Mercury.
.Friday...Mostly cloudy with scattered showers and windy. Snow level 6000 feet. Southwest winds 20 to 35 mph. Low temperatures 30 to 37 on the mesas, 40 to 45 on the dry lakes, 40 to 47 at the lower elevations, 45 at Mercury. High temperatures 37 to 44 on the mesas, 50 to 57 at the lower elevations, 54 at Mercury.
.Saturday...Partly cloudy with isolated showers. Snow level 5000 feet. Northwest winds 10 to 25 mph. Low temperatures 28 to 34 on the mesas, 37 to 42 on the dry lakes, 37 to 44 at the lower elevations, 42 at Mercury. High temperatures 37 to 44 on the mesas, 51 to 58 at the lower elevations, 55 at Mercury.
.Sunday...Mostly sunny. Northeast winds 10 to 25 mph. Low temperatures 23 to 30 on the mesas, 30 to 35 on the dry lakes, 33 to 40 at the lower elevations, 38 at Mercury. High temperatures 39 to 46 on the mesas, 52 to 58 at the lower elevations, 55 at Mercury.
.Monday...Mostly cloudy with a chance of showers. Northeast winds 10 to 25 mph. Low temperatures 26 to 32 on the mesas, 35 to 40 on the dry lakes, 35 to 41 at the lower elevations, 38 at Mercury. High temperatures 40 to 47 on the mesas, 54 to 61 at the lower elevations, 57 at Mercury
-End Forecast---J Wood
Weather questions or reports should be directed to the Duty Forecaster at 5-1255.