Two forecasts, side by side. The National Weather Service runs
numerical models on a 2.5 km grid. This station runs century-old arithmetic
on one barometer. They disagree often, and the
scoreboard keeps an honest record of who was right.
From our own instruments
Zambretti outlook
Barometer only · next 24 hours
Occasional rain, worsening
Implied chance of measurable precipitation: 75%
65% confidence
Show the inputs
- sea-level pressure
- 1007.51 hPa
- trend
- -0.515 hPa/h
- trend class
- falling
- wind direction
- S · 180°
- wind adjustment
- -11.5 hPa
- season adjustment
- +0.0 hPa
- issued
- Oct 2, 12:06 PM
Tonight's minimum
Dew-point convergence
Issued once a night, in the hour or so before sunset
— about 6:43 PM today.
The forecast converges on the dew point measured at dusk, so running
it at noon would produce a confident number and the wrong one.
Check back this evening.
National Weather Service
This Afternoon
Patchy Smoke
84°F
Wind 5 mph SW
Tonight
Partly Cloudy then Patchy Smoke
65°F
Wind 1 to 8 mph NNE
Saturday
Haze
86°F
Wind 1 to 7 mph W
Saturday Night
Mostly Clear
65°F
Wind 3 to 8 mph NE
Sunday
Mostly Sunny
85°F
Wind 2 to 8 mph SW
Sunday Night
Partly Cloudy
66°F 2% precip
Wind 6 mph NE
Monday
Sunny
84°F
Wind 2 to 8 mph WSW
Monday Night
Clear
64°F
Wind 5 to 9 mph NE
NWS data from api.weather.gov, grid STO/81,48. Cached Oct 2, 12:06 PM.