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Weather in Byron, CA · National Weather Service + NOAA

Snow is rare in Byron

Byron has mild winters and warm summers, with very little rain. A typical July afternoon reaches 91°, a January night drops to 40°, and snow is almost unheard of. In November, a normal day reaches 66° and a normal night drops to 45°.

Winter 59°/41°Spring 73°/49°Summer 89°/59°Fall 77°/51°
Right now
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Sunrise 9:33 am · sunset 8:06 pm

Getting the latest forecast from the National Weather Service…

What stands out about Byron’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
Snow is rareNo measurable snow in a normal year.A dry climateJust 13 inches of rain and melted snow a year, less than 96% of U.S. towns.Plenty of 90° daysAbout 82 days a year reach 90°.
A normal year

Where today sits in Byron’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
59° / 41°
Snow is rare
Spring
73° / 49°
Last frost around Jan 19
Summer
89° / 59°
82 days reach 90° in a normal year
Fall now
77° / 51°
First frost around Dec 10
38 daysuntil the usual first frost (Dec 10)
Best months to be outside
FebMarAprMayOctNov
Highs of 62–84° and lows of 40° or more
How much snow does Byron get?Almost none.When is it wettest?January, with 2.8 inches.Is it warmer than it used to be?+1.5° vs. the 20th century.

Weather talk

Road reports, first frosts and storm memories from neighbors in Byron.

Town Square →
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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Byron itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Tracy Pumping Plt, CA (6 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.