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
1130 PST Fri Aug 29 2025
Official Sunset Friday 1817 PST
Official Sunrise Saturday 514 PST
Forecaster: J Wood
.Forecast Summary...Clouds have formed over the higher terrain this afternoon. So far, there's been no thunderstorm activity but, keeping a slight chance through this evening since conditions are still somewhat favorable. High pressure will build over the region this weekend. This will end the chance of thunderstorms and bring a return to hot afternoon temperatures. Looking ahead to next week, hot and dry conditions will be observed early with a return of monsoon moisture mid-week.
---For The Nevada National Security Site---
.Today...Partly cloudy with a slight chance of afternoon thunderstorms. Variable winds to 10 mph in the morning becoming southwest 10 to 20 mph in the afternoon. Higher gusts near thunderstorms. High temperatures 74 to 81 for the mesas, 88 to 95 at the lower elevations, 90 in Mercury.
.Tonight...Partly cloudy with a slight chance of evening thunderstorms becoming mostly clear overnight. Evening south winds 5 to 15 mph becoming variable to 10 mph overnight. Low temperatures 50 to 58 on the mesas, 55 to 60 on the dry lakes, 63 to 71 at the lower elevations, 70 in Mercury.
.Saturday...Sunny with a few afternoon clouds over the higher terrain. Northeast to east winds 10 to 20 mph. High temperatures 76 to 83 for the mesas, 90 to 98 at the lower elevations, 93 in Mercury.
.Saturday Night...Mostly clear. Evening northeast winds 5 to 15 mph becoming variable to 10 mph overnight. Low temperatures 55 to 63 on the mesas, 55 to 60 on the dry lakes, 64 to 72 at the lower elevations, 71 in Mercury.
.Sunday...Mostly sunny and hot. Variable winds to 10 mph in the morning becoming southwest 10 to 25 mph in the afternoon. High temperatures 79 to 86 for the mesas, 93 to 101 at the lower elevations, 96 in Mercury.
.Monday...Mostly sunny and hot. South winds 10 to 25 mph. Low temperatures 53 to 61 on the mesas, 55 to 60 on the dry lakes, 65 to 73 at the lower elevations, 72 in Mercury. High temperatures 80 to 87 for the mesas, 95 to 102 at the lower elevations, 97 in Mercury.
.Tuesday...Partly cloudy and hot. South winds 10 to 25 mph. Low temperatures 53 to 61 on the mesas, 60 to 65 on the dry lakes, 68 to 76 at the lower elevations, 75 in Mercury. High temperatures 80 to 87 for the mesas, 95 to 103 at the lower elevations, 98 in Mercury.
.Wednesday...Partly cloudy with isolated thunderstorms. South winds 10 to 25 mph. Higher gusts near thunderstorms. Low temperatures 55 to 63 on the mesas, 65 to 70 on the dry lakes, 70 to 77 at the lower elevations, 76 in Mercury. High temperatures 77 to 85 for the mesas, 93 to 100 at the lower elevations, 95 in Mercury.
.Thursday...Partly cloudy with isolated thunderstorms. South winds 10 to 25 mph. Higher gusts near thunderstorms. Low temperatures 55 to 63 on the mesas, 65 to 70 on the dry lakes, 68 to 75 at the lower elevations, 74 in Mercury. High temperatures 76 to 83 for the mesas, 90 to 98 at the lower elevations, 93 in 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
1130 PST Fri Aug 29 2025
Official Sunset Friday 1817 PST
Official Sunrise Saturday 514 PST
Forecaster: J Wood
NNSS Forecast Weather Threat Matrix
Fri 8/29
Sat 8/30
Sun 8/31
Mon 9/01
Tue 9/02
Wed 9/03
Thu 9/04
Thunderstorms.
Heat.
Heat.
Heat.
Heat.
Heat/Thunderstorms.
Thunderstorms.
Threat/Impacts Legend
None/Low
Minor
Moderate
Major
.Forecast Summary...Clouds have formed over the higher terrain this afternoon. So far, there's been no thunderstorm activity but, keeping a slight chance through this evening since conditions are still somewhat favorable. High pressure will build over the region this weekend. This will end the chance of thunderstorms and bring a return to hot afternoon temperatures. Looking ahead to next week, hot and dry conditions will be observed early with a return of monsoon moisture mid-week.
---For The Nevada National Security Site---
.Today...Partly cloudy with a slight chance of afternoon thunderstorms. Variable winds to 10 mph in the morning becoming southwest 10 to 20 mph in the afternoon. Higher gusts near thunderstorms. High temperatures 74 to 81 for the mesas, 88 to 95 at the lower elevations, 90 in Mercury.
.Tonight...Partly cloudy with a slight chance of evening thunderstorms becoming mostly clear overnight. Evening south winds 5 to 15 mph becoming variable to 10 mph overnight. Low temperatures 50 to 58 on the mesas, 55 to 60 on the dry lakes, 63 to 71 at the lower elevations, 70 in Mercury.
.Saturday...Sunny with a few afternoon clouds over the higher terrain. Northeast to east winds 10 to 20 mph. High temperatures 76 to 83 for the mesas, 90 to 98 at the lower elevations, 93 in Mercury.
.Saturday Night...Mostly clear. Evening northeast winds 5 to 15 mph becoming variable to 10 mph overnight. Low temperatures 55 to 63 on the mesas, 55 to 60 on the dry lakes, 64 to 72 at the lower elevations, 71 in Mercury.
.Sunday...Mostly sunny and hot. Variable winds to 10 mph in the morning becoming southwest 10 to 25 mph in the afternoon. High temperatures 79 to 86 for the mesas, 93 to 101 at the lower elevations, 96 in Mercury.
.Monday...Mostly sunny and hot. South winds 10 to 25 mph. Low temperatures 53 to 61 on the mesas, 55 to 60 on the dry lakes, 65 to 73 at the lower elevations, 72 in Mercury. High temperatures 80 to 87 for the mesas, 95 to 102 at the lower elevations, 97 in Mercury.
.Tuesday...Partly cloudy and hot. South winds 10 to 25 mph. Low temperatures 53 to 61 on the mesas, 60 to 65 on the dry lakes, 68 to 76 at the lower elevations, 75 in Mercury. High temperatures 80 to 87 for the mesas, 95 to 103 at the lower elevations, 98 in Mercury.
.Wednesday...Partly cloudy with isolated thunderstorms. South winds 10 to 25 mph. Higher gusts near thunderstorms. Low temperatures 55 to 63 on the mesas, 65 to 70 on the dry lakes, 70 to 77 at the lower elevations, 76 in Mercury. High temperatures 77 to 85 for the mesas, 93 to 100 at the lower elevations, 95 in Mercury.
.Thursday...Partly cloudy with isolated thunderstorms. South winds 10 to 25 mph. Higher gusts near thunderstorms. Low temperatures 55 to 63 on the mesas, 65 to 70 on the dry lakes, 68 to 75 at the lower elevations, 74 in Mercury. High temperatures 76 to 83 for the mesas, 90 to 98 at the lower elevations, 93 in Mercury.
-End Forecast---J Wood
Weather questions or reports should be directed to the Duty Forecaster at 5-1255.