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
1400 PST Wed Sep 2 2026
Official Sunrise Thursday 517 PST
Official Sunset Thursday 1809 PST
Forecaster: J Wood
.Forecast Summary...Two areas of low pressure have combined to form a closed circulation in the Pacific Northwest. Strong surface winds and seasonable temperatures in Nevada continue to accompany this feature as it moves southward. The low will stagnate over Northern California before the weekend, allowing for southwest upper level to pull moisture from Pacific tropical storm Maria and create favorable conditions for isolated showers over the site on Sunday.
---For The Nevada National Security Site---
.Tonight...Mostly Clear. South Southwesterly winds 15 to 25 mph becoming light and variable overnight. Low temperatures 44 to 52 on the mesas, 52 to 61 on the dry lakes, 61 to 69 at the lower elevations, 67 at Mercury.
.Thursday...Sunny. Southerly winds 15 to 25 mph gusting to 40 mph. High temperatures 67 to 75 on the mesas, 86 to 94 at the lower elevations, 86 at Mercury.
.Thursday Night...Clear. Southerly winds 10 to 25 mph overnight. Low temperatures 42 to 50 on the mesas, 50 to 59 on the dry lakes, 59 to 67 at the lower elevations, 65 at Mercury.
.Friday...Sunny. Southerly winds 15 to 25 mph gusting to 40 mph. High temperatures 66 to 74 on the mesas, 85 to 93 at the lower elevations, 86 at Mercury.
.Saturday...Mostly Sunny. Southerly winds 15 to 25 mph gusting to 35 mph. Low temperatures 44 to 52 on the mesas, 48 to 54 on the dry lakes, 61 to 69 at the lower elevations, 67 at Mercury. High temperatures 67 to 75 on the mesas, 85 to 93 at the lower elevations, 85 at Mercury.
.Sunday...Partly Cloudy with a slight chance of showers. Southerly winds 10 to 20 mph gusting to 30 mph. Low temperatures 48 to 56 on the mesas, 50 to 56 on the dry lakes, 64 to 72 at the lower elevations, 69 at Mercury. High temperatures 63 to 71 on the mesas, 80 to 88 at the lower elevations, 81 at Mercury.
.Monday...Partly Cloudy. South Southwesterly winds 10 to 20 mph gusting to 30 mph. Low temperatures 48 to 56 on the mesas, 50 to 56 on the dry lakes, 64 to 72 at the lower elevations, 68 at Mercury. High temperatures 65 to 73 on the mesas, 83 to 91 at the lower elevations, 83 at Mercury.
.Tuesday...Mostly Sunny. South Southwesterly winds 10 to 25 mph. Low temperatures 47 to 55 on the mesas, 50 to 56 on the dry lakes, 64 to 72 at the lower elevations, 68 at Mercury. High temperatures 67 to 75 on the mesas, 85 to 93 at the lower elevations, 86 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
1400 PST Wed Sep 2 2026
Official Sunrise Thursday 517 PST
Official Sunset Thursday 1809 PST
Forecaster: J Wood
NNSS Forecast Weather Threat Matrix
Thu 9/03
Fri 9/04
Sat 9/05
Sun 9/06
Mon 9/07
Tue 9/08
Wind.
Wind.
Wind.
Wind.
Wind.
None.
Threat/Impacts Legend
None/Low
Minor
Moderate
Major
.Forecast Summary...Two areas of low pressure have combined to form a closed circulation in the Pacific Northwest. Strong surface winds and seasonable temperatures in Nevada continue to accompany this feature as it moves southward. The low will stagnate over Northern California before the weekend, allowing for southwest upper level to pull moisture from Pacific tropical storm Maria and create favorable conditions for isolated showers over the site on Sunday.
---For The Nevada National Security Site---
.Tonight...Mostly Clear. South Southwesterly winds 15 to 25 mph becoming light and variable overnight. Low temperatures 44 to 52 on the mesas, 52 to 61 on the dry lakes, 61 to 69 at the lower elevations, 67 at Mercury.
.Thursday...Sunny. Southerly winds 15 to 25 mph gusting to 40 mph. High temperatures 67 to 75 on the mesas, 86 to 94 at the lower elevations, 86 at Mercury.
.Thursday Night...Clear. Southerly winds 10 to 25 mph overnight. Low temperatures 42 to 50 on the mesas, 50 to 59 on the dry lakes, 59 to 67 at the lower elevations, 65 at Mercury.
.Friday...Sunny. Southerly winds 15 to 25 mph gusting to 40 mph. High temperatures 66 to 74 on the mesas, 85 to 93 at the lower elevations, 86 at Mercury.
.Saturday...Mostly Sunny. Southerly winds 15 to 25 mph gusting to 35 mph. Low temperatures 44 to 52 on the mesas, 48 to 54 on the dry lakes, 61 to 69 at the lower elevations, 67 at Mercury. High temperatures 67 to 75 on the mesas, 85 to 93 at the lower elevations, 85 at Mercury.
.Sunday...Partly Cloudy with a slight chance of showers. Southerly winds 10 to 20 mph gusting to 30 mph. Low temperatures 48 to 56 on the mesas, 50 to 56 on the dry lakes, 64 to 72 at the lower elevations, 69 at Mercury. High temperatures 63 to 71 on the mesas, 80 to 88 at the lower elevations, 81 at Mercury.
.Monday...Partly Cloudy. South Southwesterly winds 10 to 20 mph gusting to 30 mph. Low temperatures 48 to 56 on the mesas, 50 to 56 on the dry lakes, 64 to 72 at the lower elevations, 68 at Mercury. High temperatures 65 to 73 on the mesas, 83 to 91 at the lower elevations, 83 at Mercury.
.Tuesday...Mostly Sunny. South Southwesterly winds 10 to 25 mph. Low temperatures 47 to 55 on the mesas, 50 to 56 on the dry lakes, 64 to 72 at the lower elevations, 68 at Mercury. High temperatures 67 to 75 on the mesas, 85 to 93 at the lower elevations, 86 at Mercury.
-End Forecast---J Wood
Weather questions or reports should be directed to the Duty Forecaster at 5-1255.