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
0800 PST Wed Dec 31 2025
Official Sunset Wednesday 1638 PST
Official Sunrise Thursday 657 PST
Forecaster: J Wood
.Forecast Summary...A Pacific storm off the southern California coast is spreading a considerable amount of clouds across the region this morning. This will lead to showers developing this afternoon. Scattered showers will then be observed through tomorrow. This is a mild system so precipitation will be observed as rain even for the higher elevations. Several more systems will bring unsettled weather to our area through at least the middle of next week. The first will be just clouds and wind for Saturday. The next one will bring a return to wet weather early next week.
---For The Nevada National Security Site---
.Today...Mostly cloudy with showers developing this afternoon. East to southeast winds 10 to 20 mph. High temperatures 40 to 47 on the mesas, 50 to 56 at the lower elevations, 52 at Mercury.
.Tonight...Mostly cloudy with scattered showers mainly before midnight. Southeast winds 5 to 15 mph. Low temperatures 34 to 40 on the mesas, 40 to 45 on the dry lakes, 41 to 47 on the lower elevations, 45 at Mercury.
.Thursday...Partly cloudy scattered afternoon showers. Southeast winds 10 to 20 mph. High temperatures 35 to 42 on the mesas, 44 to 50 at the lower elevations, 47 at Mercury.
.Thursday Night...Partly cloudy with scattered evening showers. Southeast winds 5 to 15 mph. Low temperatures 29 to 35 on the mesas, 35 to 40 on the dry lakes, 37 to 44 on the lower elevations, 43 at Mercury.
.Friday...Partly cloudy. South winds 10 to 20 mph. High temperatures 40 to 47 on the mesas, 52 to 59 at the lower elevations, 55 at Mercury.
.Saturday...Mostly cloudy. South winds 15 to 30 mph. Low temperatures 32 to 37 on the mesas, 40 to 45 on the dry lakes, 39 to 46 on the lower elevations, 45 at Mercury. High temperatures 42 to 49 on the mesas, 56 to 63 at the lower elevations, 59 at Mercury.
.Sunday...Mostly cloudy with a chance of showers. Southeast winds 10 to 25 mph. Low temperatures 25 to 32 on the mesas, 35 to 40 on the dry lakes, 35 to 43 on the lower elevations, 41 at Mercury. High temperatures 39 to 46 on the mesas, 53 to 60 at the lower elevations, 57 at Mercury.
.Monday...Mostly cloudy with scattered showers. Windy. South winds 20 to 35 mph. Low temperatures 30 to 38 on the mesas, 40 to 45 on the dry lakes, 43 to 50 on the lower elevations, 48 at Mercury. High temperatures 40 to 47 on the mesas, 54 to 61 at the lower elevations, 58 at Mercury.
.Tuesday...Mostly cloudy with isolated showers. South winds 15 to 30 mph. Low temperatures 30 to 38 on the mesas, 40 to 45 on the dry lakes, 43 to 50 on the lower elevations, 40 at Mercury. High temperatures 37 to 44 on the mesas, 50 to 57 at the lower elevations, 54 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
0800 PST Wed Dec 31 2025
Official Sunset Wednesday 1638 PST
Official Sunrise Thursday 657 PST
Forecaster: J Wood
NNSS Forecast Weather Threat Matrix
Wed 12/31
Thu 1/01
Fri 1/02
Sat 1/03
Sun 1/04
Mon 1/05
Tue 1/06
Showers.
Showers.
None.
Wind.
Showers.
Wind/Showers.
Wind/Showers.
Threat/Impacts Legend
None/Low
Minor
Moderate
Major
.Forecast Summary...A Pacific storm off the southern California coast is spreading a considerable amount of clouds across the region this morning. This will lead to showers developing this afternoon. Scattered showers will then be observed through tomorrow. This is a mild system so precipitation will be observed as rain even for the higher elevations. Several more systems will bring unsettled weather to our area through at least the middle of next week. The first will be just clouds and wind for Saturday. The next one will bring a return to wet weather early next week.
---For The Nevada National Security Site---
.Today...Mostly cloudy with showers developing this afternoon. East to southeast winds 10 to 20 mph. High temperatures 40 to 47 on the mesas, 50 to 56 at the lower elevations, 52 at Mercury.
.Tonight...Mostly cloudy with scattered showers mainly before midnight. Southeast winds 5 to 15 mph. Low temperatures 34 to 40 on the mesas, 40 to 45 on the dry lakes, 41 to 47 on the lower elevations, 45 at Mercury.
.Thursday...Partly cloudy scattered afternoon showers. Southeast winds 10 to 20 mph. High temperatures 35 to 42 on the mesas, 44 to 50 at the lower elevations, 47 at Mercury.
.Thursday Night...Partly cloudy with scattered evening showers. Southeast winds 5 to 15 mph. Low temperatures 29 to 35 on the mesas, 35 to 40 on the dry lakes, 37 to 44 on the lower elevations, 43 at Mercury.
.Friday...Partly cloudy. South winds 10 to 20 mph. High temperatures 40 to 47 on the mesas, 52 to 59 at the lower elevations, 55 at Mercury.
.Saturday...Mostly cloudy. South winds 15 to 30 mph. Low temperatures 32 to 37 on the mesas, 40 to 45 on the dry lakes, 39 to 46 on the lower elevations, 45 at Mercury. High temperatures 42 to 49 on the mesas, 56 to 63 at the lower elevations, 59 at Mercury.
.Sunday...Mostly cloudy with a chance of showers. Southeast winds 10 to 25 mph. Low temperatures 25 to 32 on the mesas, 35 to 40 on the dry lakes, 35 to 43 on the lower elevations, 41 at Mercury. High temperatures 39 to 46 on the mesas, 53 to 60 at the lower elevations, 57 at Mercury.
.Monday...Mostly cloudy with scattered showers. Windy. South winds 20 to 35 mph. Low temperatures 30 to 38 on the mesas, 40 to 45 on the dry lakes, 43 to 50 on the lower elevations, 48 at Mercury. High temperatures 40 to 47 on the mesas, 54 to 61 at the lower elevations, 58 at Mercury.
.Tuesday...Mostly cloudy with isolated showers. South winds 15 to 30 mph. Low temperatures 30 to 38 on the mesas, 40 to 45 on the dry lakes, 43 to 50 on the lower elevations, 40 at Mercury. High temperatures 37 to 44 on the mesas, 50 to 57 at the lower elevations, 54 at Mercury.
-End Forecast---J Wood
Weather questions or reports should be directed to the Duty Forecaster at 5-1255.