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
1430 PST Wed Jan 21 2026
Official Sunrise Thursday 653 PST
Official Sunset Thursday 1659 PST
Forecaster: J Wood
.Forecast Summary...Clouds continue to stream over the area in advance of a low pressure system that's off the California coast. The low will be heading southeast and pass by to our south on Friday. Skies will remain partly to mostly cloudy during this time. A chance of light showers will develop for Friday. The system will be heading east on Saturday. As it does so, gusty northerly winds will develop in its wake. Sunday through the end of the forecast period will be mostly sunny with light winds.
---For The Nevada National Security Site---
.Tonight...Mostly cloudy. Northeast winds to 10 mph. Low temperatures 28 to 35 on the mesas, 27 to 32 on the dry lakes, 37 to 45 at the lower elevations, 44 at Mercury.
.Thursday...Mostly cloudy. Northeast winds to 10 mph in the morning becoming south 5 to 15 mph in the afternoon. High temperatures 42 to 50 on the mesas, 56 to 63 at the lower elevations, 59 at Mercury.
.Thursday Night...Mostly cloudy. Northeast winds to 10 mph. Low temperatures 28 to 35 on the mesas, 27 to 32 on the dry lakes, 38 to 46 at the lower elevations, 46 at Mercury.
.Friday...Partly cloudy. Northeast winds to 10 mph in the morning becoming southwest 5 to 15 mph in the afternoon. High temperatures 40 to 48 on the mesas, 53 to 60 at the lower elevations, 57 at Mercury.
.Saturday...Mostly sunny. Northwest winds 15 to 30 mph. Low temperatures 24 to 30 on the mesas, 30 to 35 on the dry lakes, 34 to 41 at the lower elevations, 40 at Mercury. High temperatures 40 to 47 on the mesas, 52 to 59 at the lower elevations, 55 at Mercury.
.Sunday...Partly cloudy. Northeast winds 5 to 15 mph. Low temperatures 26 to 33 on the mesas, 25 to 30 on the dry lakes, 31 to 38 at the lower elevations, 37 at Mercury. High temperatures 40 to 47 on the mesas, 53 to 60 at the lower elevations, 56 at Mercury.
.Monday...Partly cloudy. South winds 5 to 15 mph. Low temperatures 22 to 30 on the mesas, 20 to 25 on the dry lakes, 28 to 35 at the lower elevations, 34 at Mercury. High temperatures 40 to 47 on the mesas, 55 to 62 at the lower elevations, 58 at Mercury.
.Tuesday...Mostly sunny. Southwest winds 5 to 15 mph. Low temperatures 34 to 42 on the mesas, 25 to 30 on the dry lakes, 32 to 40 at the lower elevations, 39 at Mercury. High temperatures 40 to 47 on the mesas, 55 to 62 at the lower elevations, 58 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
1430 PST Wed Jan 21 2026
Official Sunrise Thursday 653 PST
Official Sunset Thursday 1659 PST
Forecaster: J Wood
NNSS Forecast Weather Threat Matrix
Thu 1/22
Fri 1/23
Sat 1/24
Sun 1/25
Mon 1/26
Tue 1/27
None.
None.
Wind.
None.
None.
None.
Threat/Impacts Legend
None/Low
Minor
Moderate
Major
.Forecast Summary...Clouds continue to stream over the area in advance of a low pressure system that's off the California coast. The low will be heading southeast and pass by to our south on Friday. Skies will remain partly to mostly cloudy during this time. A chance of light showers will develop for Friday. The system will be heading east on Saturday. As it does so, gusty northerly winds will develop in its wake. Sunday through the end of the forecast period will be mostly sunny with light winds.
---For The Nevada National Security Site---
.Tonight...Mostly cloudy. Northeast winds to 10 mph. Low temperatures 28 to 35 on the mesas, 27 to 32 on the dry lakes, 37 to 45 at the lower elevations, 44 at Mercury.
.Thursday...Mostly cloudy. Northeast winds to 10 mph in the morning becoming south 5 to 15 mph in the afternoon. High temperatures 42 to 50 on the mesas, 56 to 63 at the lower elevations, 59 at Mercury.
.Thursday Night...Mostly cloudy. Northeast winds to 10 mph. Low temperatures 28 to 35 on the mesas, 27 to 32 on the dry lakes, 38 to 46 at the lower elevations, 46 at Mercury.
.Friday...Partly cloudy. Northeast winds to 10 mph in the morning becoming southwest 5 to 15 mph in the afternoon. High temperatures 40 to 48 on the mesas, 53 to 60 at the lower elevations, 57 at Mercury.
.Saturday...Mostly sunny. Northwest winds 15 to 30 mph. Low temperatures 24 to 30 on the mesas, 30 to 35 on the dry lakes, 34 to 41 at the lower elevations, 40 at Mercury. High temperatures 40 to 47 on the mesas, 52 to 59 at the lower elevations, 55 at Mercury.
.Sunday...Partly cloudy. Northeast winds 5 to 15 mph. Low temperatures 26 to 33 on the mesas, 25 to 30 on the dry lakes, 31 to 38 at the lower elevations, 37 at Mercury. High temperatures 40 to 47 on the mesas, 53 to 60 at the lower elevations, 56 at Mercury.
.Monday...Partly cloudy. South winds 5 to 15 mph. Low temperatures 22 to 30 on the mesas, 20 to 25 on the dry lakes, 28 to 35 at the lower elevations, 34 at Mercury. High temperatures 40 to 47 on the mesas, 55 to 62 at the lower elevations, 58 at Mercury.
.Tuesday...Mostly sunny. Southwest winds 5 to 15 mph. Low temperatures 34 to 42 on the mesas, 25 to 30 on the dry lakes, 32 to 40 at the lower elevations, 39 at Mercury. High temperatures 40 to 47 on the mesas, 55 to 62 at the lower elevations, 58 at Mercury.
-End Forecast---J Wood
Weather questions or reports should be directed to the Duty Forecaster at 5-1255.