Air Resources Laboratory / Special Operations And Research Division (SORD)
Weather Advisories:
NNSS Fire Weather Forecast
Air Resources Laboratory/Special Operations and Research Division
THIS IS THE LAST FIRE WEATHER FORECAST OF THE 2025 SEASON. FIRE WEATHER FORECASTS WILL RESUME NEXT YEAR.
Valid: Wednesday Oct 01 2025 to Saturday Oct 04 2025
Issued At: 0800 PST Wed Oct 01 2025
Forecaster: J Wood
.Forecast Summary...High pressure will be over our area today. It will provide seasonable temperatures under sunny skies. A Pacific system will begin to approach tomorrow. Gusty southerly winds will develop in advance of it. It will then push a cold front through our area on Friday. The front will be accompanied by a few showers and gusty northerly winds. Cool temperatures will also follow in its wake. The weekend will observe light winds and below normal temperatures.
Wednesday: Oct 01 2025
Weather: Mostly sunny.
Wind: Variable winds to 10 mph in the morning becoming southwest 10 to 20 mph in the afternoon.
High Temperatures: 62 to 70 on the mesas, 78 to 85 at the lower elevations, 82 at Mercury.
Relative Humidity:
45% to 70% in the morning, 20% to 30% in the afternoon.
40% to 60% in the morning, 10% to 20% in the afternoon.
Mixing Height: 6,500 feet AGL.
Chance of Wetting Rains: 0%
Chance of Thunder: 0%
Dry Lightning Probability: 0%
Thursday: Oct 02 2025
Weather: Partly cloudy and windy.
Wind: Southwest winds 15 to 25 mph with gusts to 35 mph.
High Temperatures: 65 to 73 on the mesas, 80 to 87 at the lower elevations, 83 at Mercury.
Relative Humidity:
35% to 50% in the morning, 15% to 25% in the afternoon.
25% to 40% in the morning, 10% to 20% in the afternoon.
Mixing Height: 7,000 feet AGL.
Chance of Wetting Rains: 0%
Chance of Thunder: 0%
Dry Lightning Probability: 0%
Friday: Oct 03 2025
Weather: Partly cloudy with a chance of showers. Windy.
Wind: Northwest winds 20 to 35 mph.
High Temperatures: 59 to 66 on the mesas, 73 to 80 at the lower elevations, 76 at Mercury.
Relative Humidity:
50% to 75% in the morning, 25% to 35% in the afternoon.
35% to 60% in the morning, 15% to 25% in the afternoon.
Mixing Height: 7,500 feet AGL.
Chance of Wetting Rains: 0%
Chance of Thunder: 0%
Dry Lightning Probability: 0%
Saturday: Oct 04 2025
Weather: Mostly sunny.
Wind: Northeast winds 10 to 25 mph.
High Temperatures: 58 to 65 on the mesas, 72 to 79 at the lower elevations, 75 at Mercury.
Relative Humidity:
50% to 75% in the morning, 20% to 30% in the afternoon.
40% to 60% in the morning, 10% to 20% in the afternoon.
Mixing Height: 5,000 feet AGL.
Chance of Wetting Rains: 20%
Chance of Thunder: 5%
Dry Lightning Probability: 0%
Weather questions or reports should be directed to the Duty Forecaster at 5-1255.
Air Resources Laboratory/Special Operations and Research Division
THIS IS THE LAST FIRE WEATHER FORECAST OF THE 2025 SEASON. FIRE WEATHER FORECASTS WILL RESUME NEXT YEAR.
Valid: Wednesday Oct 01 2025 to Saturday Oct 04 2025
Issued At: 0800 PST Wed Oct 01 2025
Forecaster: J Wood
.Forecast Summary...High pressure will be over our area today. It will provide seasonable temperatures under sunny skies. A Pacific system will begin to approach tomorrow. Gusty southerly winds will develop in advance of it. It will then push a cold front through our area on Friday. The front will be accompanied by a few showers and gusty northerly winds. Cool temperatures will also follow in its wake. The weekend will observe light winds and below normal temperatures.
Wednesday: Oct 01 2025
Weather: Mostly sunny.
Wind: Variable winds to 10 mph in the morning becoming southwest 10 to 20 mph in the afternoon.
High Temperatures: 62 to 70 on the mesas, 78 to 85 at the lower elevations, 82 at Mercury.
Relative Humidity:
45% to 70% in the morning, 20% to 30% in the afternoon.
40% to 60% in the morning, 10% to 20% in the afternoon.
Mixing Height: 6,500 feet AGL.
Chance of Wetting Rains: 0%
Chance of Thunder: 0%
Dry Lightning Probability: 0%
Thursday: Oct 02 2025
Weather: Partly cloudy and windy.
Wind: Southwest winds 15 to 25 mph with gusts to 35 mph.
High Temperatures: 65 to 73 on the mesas, 80 to 87 at the lower elevations, 83 at Mercury.
Relative Humidity:
35% to 50% in the morning, 15% to 25% in the afternoon.
25% to 40% in the morning, 10% to 20% in the afternoon.
Mixing Height: 7,000 feet AGL.
Chance of Wetting Rains: 0%
Chance of Thunder: 0%
Dry Lightning Probability: 0%
Friday: Oct 03 2025
Weather: Partly cloudy with a chance of showers. Windy.
Wind: Northwest winds 20 to 35 mph.
High Temperatures: 59 to 66 on the mesas, 73 to 80 at the lower elevations, 76 at Mercury.
Relative Humidity:
50% to 75% in the morning, 25% to 35% in the afternoon.
35% to 60% in the morning, 15% to 25% in the afternoon.
Mixing Height: 7,500 feet AGL.
Chance of Wetting Rains: 0%
Chance of Thunder: 0%
Dry Lightning Probability: 0%
Saturday: Oct 04 2025
Weather: Mostly sunny.
Wind: Northeast winds 10 to 25 mph.
High Temperatures: 58 to 65 on the mesas, 72 to 79 at the lower elevations, 75 at Mercury.
Relative Humidity:
50% to 75% in the morning, 20% to 30% in the afternoon.
40% to 60% in the morning, 10% to 20% in the afternoon.
Mixing Height: 5,000 feet AGL.
Chance of Wetting Rains: 20%
Chance of Thunder: 5%
Dry Lightning Probability: 0%
Weather questions or reports should be directed to the Duty Forecaster at 5-1255.