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
1530 PST Wed Nov 19 2025
Official Sunrise Thursday 628 PST
Official Sunset Thursday 1631 PST
Forecaster: J Wood
.Forecast Summary...Isolated showers have developed this afternoon as an area of low pressure passes through the region. This activity will be on the decrease this evening. There will be a break tonight before the next system approaches tomorrow. It will spread showers back over our area, especially for tomorrow night. Rainfall totals will be lighter than the current system. Conditions will improve on Friday. Looking ahead to the weekend into early next week, high pressure will provide dry weather with afternoon temperatures running near seasonal values.
---For The Nevada National Security Site---
.Tonight...Partly cloudy with isolated evening showers. Northeast winds 5 to 15 mph. Low temperatures 27 to 34 on the mesas, 35 to 40 on the dry lakes, 37 to 44 at the lower elevations, 40 at Mercury.
.Thursday...Increasing clouds leading to a chance of late afternoon showers. Snow level 6000 feet. Southeast winds 10 to 20 mph. High temperatures 37 to 44 on the mesas, 49 to 56 at the lower elevations, 52 at Mercury.
.Thursday Night...Mostly cloudy with scattered showers. Snow level 6000 feet. Southeast winds 5 to 15 mph. Low temperatures 27 to 34 on the mesas, 40 to 45 on the dry lakes, 40 to 47 at the lower elevations, 45 at Mercury.
.Friday...Partly cloudy with isolated morning showers. Northeast winds 10 to 20 mph. High temperatures 39 to 46 on the mesas, 52 to 59 at the lower elevations, 55 at Mercury.
.Saturday...Mostly sunny. Northeast winds 10 to 20 mph. Low temperatures 25 to 32 on the mesas, 30 to 35 on the dry lakes, 37 to 44 at the lower elevations, 43 at Mercury. High temperatures 42 to 49 on the mesas, 56 to 63 at the lower elevations, 59 at Mercury.
.Sunday...Mostly sunny. Northeast winds 10 to 20 mph. Low temperatures 28 to 35 on the mesas, 35 to 40 on the dry lakes, 37 to 44 at the lower elevations, 42 at Mercury. High temperatures 45 to 52 on the mesas, 59 to 66 at the lower elevations, 62 at Mercury.
.Monday...Mostly sunny. Northeast winds 5 to 15 mph. Low temperatures 28 to 35 on the mesas, 35 to 40 on the dry lakes, 37 to 44 at the lower elevations, 44 at Mercury. High temperatures 47 to 54 on the mesas, 60 to 67 at the lower elevations, 63 at Mercury.
.Tuesday...Mostly sunny. North winds 5 to 15 mph. Low temperatures 28 to 35 on the mesas, 35 to 40 on the dry lakes, 37 to 44 at the lower elevations, 43 at Mercury. High temperatures 47 to 54 on the mesas, 60 to 67 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
1530 PST Wed Nov 19 2025
Official Sunrise Thursday 628 PST
Official Sunset Thursday 1631 PST
Forecaster: J Wood
NNSS Forecast Weather Threat Matrix
Thu 11/20
Fri 11/21
Sat 11/22
Sun 11/23
Mon 11/24
Tue 11/25
Showers.
Showers.
None.
None.
None.
None.
Threat/Impacts Legend
None/Low
Minor
Moderate
Major
.Forecast Summary...Isolated showers have developed this afternoon as an area of low pressure passes through the region. This activity will be on the decrease this evening. There will be a break tonight before the next system approaches tomorrow. It will spread showers back over our area, especially for tomorrow night. Rainfall totals will be lighter than the current system. Conditions will improve on Friday. Looking ahead to the weekend into early next week, high pressure will provide dry weather with afternoon temperatures running near seasonal values.
---For The Nevada National Security Site---
.Tonight...Partly cloudy with isolated evening showers. Northeast winds 5 to 15 mph. Low temperatures 27 to 34 on the mesas, 35 to 40 on the dry lakes, 37 to 44 at the lower elevations, 40 at Mercury.
.Thursday...Increasing clouds leading to a chance of late afternoon showers. Snow level 6000 feet. Southeast winds 10 to 20 mph. High temperatures 37 to 44 on the mesas, 49 to 56 at the lower elevations, 52 at Mercury.
.Thursday Night...Mostly cloudy with scattered showers. Snow level 6000 feet. Southeast winds 5 to 15 mph. Low temperatures 27 to 34 on the mesas, 40 to 45 on the dry lakes, 40 to 47 at the lower elevations, 45 at Mercury.
.Friday...Partly cloudy with isolated morning showers. Northeast winds 10 to 20 mph. High temperatures 39 to 46 on the mesas, 52 to 59 at the lower elevations, 55 at Mercury.
.Saturday...Mostly sunny. Northeast winds 10 to 20 mph. Low temperatures 25 to 32 on the mesas, 30 to 35 on the dry lakes, 37 to 44 at the lower elevations, 43 at Mercury. High temperatures 42 to 49 on the mesas, 56 to 63 at the lower elevations, 59 at Mercury.
.Sunday...Mostly sunny. Northeast winds 10 to 20 mph. Low temperatures 28 to 35 on the mesas, 35 to 40 on the dry lakes, 37 to 44 at the lower elevations, 42 at Mercury. High temperatures 45 to 52 on the mesas, 59 to 66 at the lower elevations, 62 at Mercury.
.Monday...Mostly sunny. Northeast winds 5 to 15 mph. Low temperatures 28 to 35 on the mesas, 35 to 40 on the dry lakes, 37 to 44 at the lower elevations, 44 at Mercury. High temperatures 47 to 54 on the mesas, 60 to 67 at the lower elevations, 63 at Mercury.
.Tuesday...Mostly sunny. North winds 5 to 15 mph. Low temperatures 28 to 35 on the mesas, 35 to 40 on the dry lakes, 37 to 44 at the lower elevations, 43 at Mercury. High temperatures 47 to 54 on the mesas, 60 to 67 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.