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
0700 PST Fri Dec 12 2025
Official Sunset Friday 1628 PST
Official Sunrise Saturday 649 PST
Forecaster: J Wood
.Forecast Summary...High pressure will provide mild afternoon temperatures under a mostly sunny sky today. It will begin to weaken and shift east this weekend. Our weather will remain mild and dry but there will be an increase in high clouds. A larger shift in the weather will occur next week as the storm track shifts southward into California. No precipitation is expected but, there will be a considerable amount of clouds and an increase in winds. High temperatures will also be on a gradual cooling trend.
---For The Nevada National Security Site---
.Today...Mostly sunny. Northeast winds 5 to 15 mph. High temperatures 53 to 60 on the mesas, 68 to 75 at the lower elevations, 72 at Mercury.
.Tonight...Mostly clear. Northeast winds 5 to 15 mph. Low temperatures 38 to 45 on the mesas, 25 to 30 on the dry lakes, 39 to 47 at the lower elevations, 47 at Mercury.
.Saturday...Partly cloudy. South winds 5 to 15 mph. High temperatures 50 to 57 on the mesas, 64 to 71 at the lower elevations, 68 at Mercury.
.Saturday Night...Partly cloudy. Northeast winds 5 to 15 mph. Low temperatures 35 to 42 on the mesas, 25 to 30 on the dry lakes, 37 to 44 at the lower elevations, 43 at Mercury.
.Sunday...Mostly sunny. Southwest winds 5 to 15 mph. High temperatures 49 to 56 on the mesas, 63 to 70 at the lower elevations, 67 at Mercury.
.Monday...Partly cloudy. South winds 5 to 15 mph. Low temperatures 37 to 45 on the mesas, 30 to 35 on the dry lakes, 40 to 47 at the lower elevations, 46 at Mercury. High temperatures 48 to 55 on the mesas, 62 to 69 at the lower elevations, 66 at Mercury.
.Tuesday...Mostly cloudy. Southwest winds 10 to 25 mph. Low temperatures 36 to 44 on the mesas, 35 to 40 on the dry lakes, 42 to 49 at the lower elevations, 48 at Mercury. High temperatures 48 to 55 on the mesas, 62 to 69 at the lower elevations, 65 at Mercury.
.Wednesday...Mostly cloudy. Southwest winds 15 to 30 mph. Low temperatures 33 to 40 on the mesas, 35 to 40 on the dry lakes, 42 to 49 at the lower elevations, 49 at Mercury. High temperatures 47 to 53 on the mesas, 60 to 67 at the lower elevations, 64 at Mercury.
.Thursday...Mostly cloudy. Southwest winds 15 to 30 mph. Low temperatures 33 to 40 on the mesas, 40 to 45 on the dry lakes, 40 to 47 at the lower elevations, 47 at Mercury. High temperatures 47 to 53 on the mesas, 59 to 66 at the lower elevations, 62 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
0700 PST Fri Dec 12 2025
Official Sunset Friday 1628 PST
Official Sunrise Saturday 649 PST
Forecaster: J Wood
NNSS Forecast Weather Threat Matrix
Fri 12/12
Sat 12/13
Sun 12/14
Mon 12/15
Tue 12/16
Wed 12/17
Thu 12/18
None.
None.
None.
None.
None.
Wind.
Wind.
Threat/Impacts Legend
None/Low
Minor
Moderate
Major
.Forecast Summary...High pressure will provide mild afternoon temperatures under a mostly sunny sky today. It will begin to weaken and shift east this weekend. Our weather will remain mild and dry but there will be an increase in high clouds. A larger shift in the weather will occur next week as the storm track shifts southward into California. No precipitation is expected but, there will be a considerable amount of clouds and an increase in winds. High temperatures will also be on a gradual cooling trend.
---For The Nevada National Security Site---
.Today...Mostly sunny. Northeast winds 5 to 15 mph. High temperatures 53 to 60 on the mesas, 68 to 75 at the lower elevations, 72 at Mercury.
.Tonight...Mostly clear. Northeast winds 5 to 15 mph. Low temperatures 38 to 45 on the mesas, 25 to 30 on the dry lakes, 39 to 47 at the lower elevations, 47 at Mercury.
.Saturday...Partly cloudy. South winds 5 to 15 mph. High temperatures 50 to 57 on the mesas, 64 to 71 at the lower elevations, 68 at Mercury.
.Saturday Night...Partly cloudy. Northeast winds 5 to 15 mph. Low temperatures 35 to 42 on the mesas, 25 to 30 on the dry lakes, 37 to 44 at the lower elevations, 43 at Mercury.
.Sunday...Mostly sunny. Southwest winds 5 to 15 mph. High temperatures 49 to 56 on the mesas, 63 to 70 at the lower elevations, 67 at Mercury.
.Monday...Partly cloudy. South winds 5 to 15 mph. Low temperatures 37 to 45 on the mesas, 30 to 35 on the dry lakes, 40 to 47 at the lower elevations, 46 at Mercury. High temperatures 48 to 55 on the mesas, 62 to 69 at the lower elevations, 66 at Mercury.
.Tuesday...Mostly cloudy. Southwest winds 10 to 25 mph. Low temperatures 36 to 44 on the mesas, 35 to 40 on the dry lakes, 42 to 49 at the lower elevations, 48 at Mercury. High temperatures 48 to 55 on the mesas, 62 to 69 at the lower elevations, 65 at Mercury.
.Wednesday...Mostly cloudy. Southwest winds 15 to 30 mph. Low temperatures 33 to 40 on the mesas, 35 to 40 on the dry lakes, 42 to 49 at the lower elevations, 49 at Mercury. High temperatures 47 to 53 on the mesas, 60 to 67 at the lower elevations, 64 at Mercury.
.Thursday...Mostly cloudy. Southwest winds 15 to 30 mph. Low temperatures 33 to 40 on the mesas, 40 to 45 on the dry lakes, 40 to 47 at the lower elevations, 47 at Mercury. High temperatures 47 to 53 on the mesas, 59 to 66 at the lower elevations, 62 at Mercury.
-End Forecast---J Wood
Weather questions or reports should be directed to the Duty Forecaster at 5-1255.