Graton CDP, California

Official LSAD Designation: Graton CDP • Census GEOID: 0630812 • Sonoma County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Graton CDP.

Reference Weather Station: GRATON, CA US (ID: USC00043578) • Located 0.5 miles from community center • Elevation: 61.0 m

Month	Average High (°F)	Average Low (°F)	Mean Temp (°F)	Precipitation (in)
January	58.0°	37.3°	47.7°	7.88"
February	62.3°	39.0°	50.7°	7.48"
March	65.9°	40.7°	53.3°	5.18"
April	70.2°	42.2°	56.2°	2.58"
May	75.2°	45.5°	60.4°	1.41"
June	81.3°	48.3°	64.8°	0.41"
July	82.6°	50.5°	66.5°	0.01"
August	83.8°	50.3°	67.1°	0.06"
September	83.7°	48.0°	65.9°	0.18"
October	78.2°	44.2°	61.2°	1.98"
November	66.8°	39.7°	53.3°	4.43"
December	57.7°	36.8°	47.2°	8.34"

2010–2025, completed calendar years only.

NOAA station GRATON, CA US (ID: USC00043578) • 0.5 miles from community center .

This is the same reference station used for monthly normals.

Show annual mean of daily highs and lows

Annual mean Annual mean of daily highs Annual mean of daily lows

Annual temperature data table (°F)

Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year	Annual mean (°F)	Annual mean of daily highs (°F)	Annual mean of daily lows (°F)
2010	56.9	71.2	42.6
2011	56.7	72.3	41.1
2012	57.5	74.0	41.0
2013	57.8	75.4	40.3
2014	59.9	75.8	44.1
2015	60.0	76.4	43.5
2016	58.7	74.0	43.4
2017	58.9	74.9	42.9
2018	58.4	73.1	43.7
2019	Unavailable	Unavailable	Unavailable
2020	60.0	75.9	44.0
2021	58.4	73.6	43.2
2022	59.2	74.8	43.7
2023	Unavailable	Unavailable	Unavailable
2024	Unavailable	Unavailable	Unavailable
2025	58.1	72.1	44.0

Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.