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 Jul 7 2026
Official Sunrise Wednesday 432 PST
Official Sunset Wednesday 1906 PST
Forecaster: J Callanan
.Forecast Summary...High pressure over the area will fluctuate throughout the forecast period. Hot and breezy southerly winds will develop during the day and subside overnight. Mid-level moisture will produce afternoon clouds, primarily over higher terrain. On Sunday, a change in the wind pattern will bring monsoonal moisture over the Desert Southwest, creating a very favorable environment for rain showers and thunderstorms.
---For The Nevada National Security Site---
.Tonight...Mostly clear. South winds 10 to 25 mph with gusts up to 30 mph becoming Northeast winds 10 mph. Low temperatures 64 to 71 on the mesas, 57 to 64 on the dry lakes, 68 to 75 at the lower elevations, 74 at Mercury.
.Wednesday...Mostly sunny. Northeast winds 10 mph in the morning, becoming South winds 10 to 25 mph with gusts up to 30 mph in the afternoon. High temperatures 87 to 94 on the mesas, 97 to 104 at the lower elevations, 101 at Mercury.
.Wednesday Night...Mostly clear. South winds 10 to 25 mph with gusts up to 30 mph becoming Northeast winds 10 mph. Low temperatures 65 to 72 on the mesas, 57 to 64 on the dry lakes, 68 to 75 at the lower elevations, 74 at Mercury.
.Thursday...Mostly sunny. South winds 10 to 25 mph with gusts up to 30 mph. Low temperatures 65 to 72 on the mesas, 59 to 66 on the dry lakes, 69 to 76 at the lower elevations, 75 at Mercury. High temperatures 89 to 96 on the mesas, 99 to 106 at the lower elevations, 102 at Mercury.
.Friday...Mostly sunny. South winds 10 to 25 mph with gusts up to 30 mph. Low temperatures 66 to 73 on the mesas, 59 to 66 on the dry lakes, 70 to 77 at the lower elevations, 76 at Mercury. High temperatures 89 to 96 on the mesas, 100 to 107 at the lower elevations, 103 at Mercury.
.Saturday...Mostly sunny. South winds 10 to 25 mph with gusts up to 30 mph. Low temperatures 67 to 74 on the mesas, 61 to 68 on the dry lakes, 71 to 78 at the lower elevations, 78 at Mercury. High temperatures 90 to 97 on the mesas, 100 to 107 at the lower elevations, 103 at Mercury.
.Sunday...Partly cloudy. South winds 10 to 25 mph with gusts up to 30 mph. Low temperatures 68 to 75 on the mesas, 61 to 68 on the dry lakes, 71 to 78 at the lower elevations, 77 at Mercury. High temperatures 86 to 93 on the mesas, 96 to 103 at the lower elevations, 100 at Mercury.
.Monday...Mostly cloudy. South winds 10 to 25 mph with gusts up to 30 mph. Slight chance for rain showers and thunderstorms. Higher wind gusts may occur near thunderstorms. Low temperatures 66 to 73 on the mesas, 59 to 66 on the dry lakes, 70 to 77 at the lower elevations, 75 at Mercury. High temperatures 82 to 89 on the mesas, 93 to 100 at the lower elevations, 96 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 Jul 7 2026
Official Sunrise Wednesday 432 PST
Official Sunset Wednesday 1906 PST
Forecaster: J Callanan
NNSS Forecast Weather Threat Matrix
Wed 7/08
Thu 7/09
Fri 7/10
Sat 7/11
Sun 7/12
Mon 7/13
None
Heat
Heat
Heat
Rain
Thunderstorms / Rain
Threat/Impacts Legend
None/Low
Minor
Moderate
Major
.Forecast Summary...High pressure over the area will fluctuate throughout the forecast period. Hot and breezy southerly winds will develop during the day and subside overnight. Mid-level moisture will produce afternoon clouds, primarily over higher terrain. On Sunday, a change in the wind pattern will bring monsoonal moisture over the Desert Southwest, creating a very favorable environment for rain showers and thunderstorms.
---For The Nevada National Security Site---
.Tonight...Mostly clear. South winds 10 to 25 mph with gusts up to 30 mph becoming Northeast winds 10 mph. Low temperatures 64 to 71 on the mesas, 57 to 64 on the dry lakes, 68 to 75 at the lower elevations, 74 at Mercury.
.Wednesday...Mostly sunny. Northeast winds 10 mph in the morning, becoming South winds 10 to 25 mph with gusts up to 30 mph in the afternoon. High temperatures 87 to 94 on the mesas, 97 to 104 at the lower elevations, 101 at Mercury.
.Wednesday Night...Mostly clear. South winds 10 to 25 mph with gusts up to 30 mph becoming Northeast winds 10 mph. Low temperatures 65 to 72 on the mesas, 57 to 64 on the dry lakes, 68 to 75 at the lower elevations, 74 at Mercury.
.Thursday...Mostly sunny. South winds 10 to 25 mph with gusts up to 30 mph. Low temperatures 65 to 72 on the mesas, 59 to 66 on the dry lakes, 69 to 76 at the lower elevations, 75 at Mercury. High temperatures 89 to 96 on the mesas, 99 to 106 at the lower elevations, 102 at Mercury.
.Friday...Mostly sunny. South winds 10 to 25 mph with gusts up to 30 mph. Low temperatures 66 to 73 on the mesas, 59 to 66 on the dry lakes, 70 to 77 at the lower elevations, 76 at Mercury. High temperatures 89 to 96 on the mesas, 100 to 107 at the lower elevations, 103 at Mercury.
.Saturday...Mostly sunny. South winds 10 to 25 mph with gusts up to 30 mph. Low temperatures 67 to 74 on the mesas, 61 to 68 on the dry lakes, 71 to 78 at the lower elevations, 78 at Mercury. High temperatures 90 to 97 on the mesas, 100 to 107 at the lower elevations, 103 at Mercury.
.Sunday...Partly cloudy. South winds 10 to 25 mph with gusts up to 30 mph. Low temperatures 68 to 75 on the mesas, 61 to 68 on the dry lakes, 71 to 78 at the lower elevations, 77 at Mercury. High temperatures 86 to 93 on the mesas, 96 to 103 at the lower elevations, 100 at Mercury.
.Monday...Mostly cloudy. South winds 10 to 25 mph with gusts up to 30 mph. Slight chance for rain showers and thunderstorms. Higher wind gusts may occur near thunderstorms. Low temperatures 66 to 73 on the mesas, 59 to 66 on the dry lakes, 70 to 77 at the lower elevations, 75 at Mercury. High temperatures 82 to 89 on the mesas, 93 to 100 at the lower elevations, 96 at Mercury.
-End Forecast---J Callanan
Weather questions or reports should be directed to the Duty Forecaster at 5-1255.