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 Fri Nov 21 2025
Official Sunrise Saturday 630 PST
Official Sunset Saturday 1630 PST
Forecaster: J Wood
.Forecast Summary...An area of low pressure is passing by well to the south. There could be a few showers tonight but, conditions will be improving overall. High pressure will build over the region this weekend and stay in place through the middle of next week. This will keep our area dry and afternoon temperatures will "warm" closer to more typical seasonal values. Breezy northerly winds could also be observed at times. Looking ahead to the end of next week, there are indications that unsettled weather will return.
---For The Nevada National Security Site---
.Tonight...Partly cloudy with a slight chance of showers. Northeast winds 10 to 20 mph. Low temperatures 25 to 32 on the mesas, 30 to 35 on the dry lakes, 36 to 43 at the lower elevations, 42 at Mercury.
.Saturday...Partly cloudy. Northeast winds 10 to 25 mph. High temperatures 42 to 49 on the mesas, 56 to 63 at the lower elevations, 59 at Mercury.
.Saturday Night...Mostly clear. Northeast winds 5 to 15 mph. Low temperatures 28 to 35 on the mesas, 30 to 35 on the dry lakes, 37 to 44 at the lower elevations, 42 at Mercury.
.Sunday...Mostly sunny. Northeast winds 10 to 20 mph. High temperatures 43 to 50 on the mesas, 57 to 64 at the lower elevations, 61 at Mercury.
.Monday...Mostly sunny. Northeast winds 10 to 20 mph. Low temperatures 28 to 35 on the mesas, 30 to 35 on the dry lakes, 35 to 42 at the lower elevations, 40 at Mercury. High temperatures 45 to 52 on the mesas, 59 to 66 at the lower elevations, 62 at Mercury.
.Tuesday...Partly cloudy. Northeast winds 10 to 25 mph. Low temperatures 28 to 35 on the mesas, 35 to 40 on the dry lakes, 37 to 44 at the lower elevations, 43 at Mercury. High temperatures 47 to 54 on the mesas, 60 to 67 at the lower elevations, 60 at Mercury.
.Wednesday...Partly cloudy. Southeast winds 10 to 20 mph. Low temperatures 28 to 35 on the mesas, 30 to 35 on the dry lakes, 35 to 42 at the lower elevations, 41 at Mercury. High temperatures 44 to 51 on the mesas, 58 to 66 at the lower elevations, 62 at Mercury.
.Thursday...Partly cloudy. South winds 10 to 25 mph. Low temperatures 28 to 35 on the mesas, 35 to 40 on the dry lakes, 38 to 46 at the lower elevations, 46 at Mercury. High temperatures 44 to 51 on the mesas, 57 to 65 at the lower elevations, 61 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 Fri Nov 21 2025
Official Sunrise Saturday 630 PST
Official Sunset Saturday 1630 PST
Forecaster: J Wood
NNSS Forecast Weather Threat Matrix
Sat 11/22
Sun 11/23
Mon 11/24
Tue 11/25
Wed 11/26
Thu 11/27
None.
None.
None.
None.
None.
None.
Threat/Impacts Legend
None/Low
Minor
Moderate
Major
.Forecast Summary...An area of low pressure is passing by well to the south. There could be a few showers tonight but, conditions will be improving overall. High pressure will build over the region this weekend and stay in place through the middle of next week. This will keep our area dry and afternoon temperatures will "warm" closer to more typical seasonal values. Breezy northerly winds could also be observed at times. Looking ahead to the end of next week, there are indications that unsettled weather will return.
---For The Nevada National Security Site---
.Tonight...Partly cloudy with a slight chance of showers. Northeast winds 10 to 20 mph. Low temperatures 25 to 32 on the mesas, 30 to 35 on the dry lakes, 36 to 43 at the lower elevations, 42 at Mercury.
.Saturday...Partly cloudy. Northeast winds 10 to 25 mph. High temperatures 42 to 49 on the mesas, 56 to 63 at the lower elevations, 59 at Mercury.
.Saturday Night...Mostly clear. Northeast winds 5 to 15 mph. Low temperatures 28 to 35 on the mesas, 30 to 35 on the dry lakes, 37 to 44 at the lower elevations, 42 at Mercury.
.Sunday...Mostly sunny. Northeast winds 10 to 20 mph. High temperatures 43 to 50 on the mesas, 57 to 64 at the lower elevations, 61 at Mercury.
.Monday...Mostly sunny. Northeast winds 10 to 20 mph. Low temperatures 28 to 35 on the mesas, 30 to 35 on the dry lakes, 35 to 42 at the lower elevations, 40 at Mercury. High temperatures 45 to 52 on the mesas, 59 to 66 at the lower elevations, 62 at Mercury.
.Tuesday...Partly cloudy. Northeast winds 10 to 25 mph. Low temperatures 28 to 35 on the mesas, 35 to 40 on the dry lakes, 37 to 44 at the lower elevations, 43 at Mercury. High temperatures 47 to 54 on the mesas, 60 to 67 at the lower elevations, 60 at Mercury.
.Wednesday...Partly cloudy. Southeast winds 10 to 20 mph. Low temperatures 28 to 35 on the mesas, 30 to 35 on the dry lakes, 35 to 42 at the lower elevations, 41 at Mercury. High temperatures 44 to 51 on the mesas, 58 to 66 at the lower elevations, 62 at Mercury.
.Thursday...Partly cloudy. South winds 10 to 25 mph. Low temperatures 28 to 35 on the mesas, 35 to 40 on the dry lakes, 38 to 46 at the lower elevations, 46 at Mercury. High temperatures 44 to 51 on the mesas, 57 to 65 at the lower elevations, 61 at Mercury.
-End Forecast---J Wood
Weather questions or reports should be directed to the Duty Forecaster at 5-1255.