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 Tue Jun 23 2026
Official Sunrise Wednesday 426 PST
Official Sunset Wednesday 1908 PST
Forecaster: J Callanan
.Forecast Summary...High pressure will provide mostly sunny skies and a warming trend throughout the workweek. Unseasonably warm temperatures and breezy afternoon winds will be observed until Friday. On Friday and Saturday, troughing from the Pacific Northwest will affect the area with elevated winds. Cooler temperatures will be observed over the weekend but will rebound on Monday.
---For The Nevada National Security Site---
.Tonight...Mostly clear. Southwest winds 10 to 25 with gusts up to 30 mph becoming northeast 10 mph overnight. Low temperatures 66 to 73 on the mesas, 59 to 65 on the dry lakes, 71 to 78 at the lower elevations, 77 at Mercury.
.Wednesday...Mostly sunny. Northeast winds 10 mph in the morning, becoming Southwest winds 15 to 25 mph with gusts up to 35 mph in the afternoon. High temperatures 83 to 90 on the mesas, 95 to 102 at the lower elevations, 97 at Mercury.
.Wednesday Night...Mostly clear. Southwest winds 15 to 25 mph with gusts up to 35 mph becoming Southwest 5 to 15 mph overnight. Low temperatures 63 to 70 on the mesas, 57 to 63 on the dry lakes, 68 to 75 at the lower elevations, 74 at Mercury.
.Thursday...Mostly sunny. Southwest winds 15 to 25 mph with gusts up to 32 mph. Low temperatures 61 to 68 on the mesas, 53 to 59 on the dry lakes, 65 to 72 at the lower elevations, 71 at Mercury. High temperatures 83 to 90 on the mesas, 94 to 101 at the lower elevations, 97 at Mercury.
.Friday...Partly cloudy. Southwest winds 20 to 30 mph with gusts up to 39 mph. Low temperatures 57 to 64 on the mesas, 51 to 57 on the dry lakes, 63 to 70 at the lower elevations, 69 at Mercury. High temperatures 80 to 87 on the mesas, 93 to 100 at the lower elevations, 95 at Mercury.
.Saturday...Mostly sunny. Southwest winds 20 to 30 mph with gusts up to 39 mph. Low temperatures 53 to 60 on the mesas, 48 to 54 on the dry lakes, 58 to 65 at the lower elevations, 64 at Mercury. High temperatures 77 to 84 on the mesas, 88 to 95 at the lower elevations, 90 at Mercury.
.Sunday...Mostly sunny. Northwest winds 10 to 20 mph. Low temperatures 51 to 58 on the mesas, 46 to 52 on the dry lakes, 58 to 64 at the lower elevations, 63 at Mercury. High temperatures 74 to 81 on the mesas, 85 to 92 at the lower elevations, 88 at Mercury.
.Monday...Mostly sunny. Southwest winds 15 to 25 mph. Low temperatures 53 to 60 on the mesas, 48 to 54 on the dry lakes, 59 to 66 at the lower elevations, 65 at Mercury. High temperatures 75 to 82 on the mesas, 85 to 92 at the lower elevations, 89 at Mercury.
-End Forecast---J Callanan
Weather questions or reports should be directed to the Duty Forecaster at 5-1255.
Air Resources Laboratory/Special Operations and Research Division
1400 PST Tue Jun 23 2026
Official Sunrise Wednesday 426 PST
Official Sunset Wednesday 1908 PST
Forecaster: J Callanan
NNSS Forecast Weather Threat Matrix
Wed 6/24
Thu 6/25
Fri 6/26
Sat 6/27
Sun 6/28
Mon 6/29
Heat / Wind
Heat / Wind
Wind
Wind
None
None
Threat/Impacts Legend
None/Low
Minor
Moderate
Major
.Forecast Summary...High pressure will provide mostly sunny skies and a warming trend throughout the workweek. Unseasonably warm temperatures and breezy afternoon winds will be observed until Friday. On Friday and Saturday, troughing from the Pacific Northwest will affect the area with elevated winds. Cooler temperatures will be observed over the weekend but will rebound on Monday.
---For The Nevada National Security Site---
.Tonight...Mostly clear. Southwest winds 10 to 25 with gusts up to 30 mph becoming northeast 10 mph overnight. Low temperatures 66 to 73 on the mesas, 59 to 65 on the dry lakes, 71 to 78 at the lower elevations, 77 at Mercury.
.Wednesday...Mostly sunny. Northeast winds 10 mph in the morning, becoming Southwest winds 15 to 25 mph with gusts up to 35 mph in the afternoon. High temperatures 83 to 90 on the mesas, 95 to 102 at the lower elevations, 97 at Mercury.
.Wednesday Night...Mostly clear. Southwest winds 15 to 25 mph with gusts up to 35 mph becoming Southwest 5 to 15 mph overnight. Low temperatures 63 to 70 on the mesas, 57 to 63 on the dry lakes, 68 to 75 at the lower elevations, 74 at Mercury.
.Thursday...Mostly sunny. Southwest winds 15 to 25 mph with gusts up to 32 mph. Low temperatures 61 to 68 on the mesas, 53 to 59 on the dry lakes, 65 to 72 at the lower elevations, 71 at Mercury. High temperatures 83 to 90 on the mesas, 94 to 101 at the lower elevations, 97 at Mercury.
.Friday...Partly cloudy. Southwest winds 20 to 30 mph with gusts up to 39 mph. Low temperatures 57 to 64 on the mesas, 51 to 57 on the dry lakes, 63 to 70 at the lower elevations, 69 at Mercury. High temperatures 80 to 87 on the mesas, 93 to 100 at the lower elevations, 95 at Mercury.
.Saturday...Mostly sunny. Southwest winds 20 to 30 mph with gusts up to 39 mph. Low temperatures 53 to 60 on the mesas, 48 to 54 on the dry lakes, 58 to 65 at the lower elevations, 64 at Mercury. High temperatures 77 to 84 on the mesas, 88 to 95 at the lower elevations, 90 at Mercury.
.Sunday...Mostly sunny. Northwest winds 10 to 20 mph. Low temperatures 51 to 58 on the mesas, 46 to 52 on the dry lakes, 58 to 64 at the lower elevations, 63 at Mercury. High temperatures 74 to 81 on the mesas, 85 to 92 at the lower elevations, 88 at Mercury.
.Monday...Mostly sunny. Southwest winds 15 to 25 mph. Low temperatures 53 to 60 on the mesas, 48 to 54 on the dry lakes, 59 to 66 at the lower elevations, 65 at Mercury. High temperatures 75 to 82 on the mesas, 85 to 92 at the lower elevations, 89 at Mercury.
-End Forecast---J Callanan
Weather questions or reports should be directed to the Duty Forecaster at 5-1255.