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Napa Weather Records

Napa, California weather data and records from 1901–2022 based on data compiled by the NOAA.
All data displayed in U.S. customary units.
All data displayed in metric units.
All-Time Recorded High
The highest temperature ever recorded in Napa, California was 113.0 °F45.0 °C which occurred on June 14, 1961.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Napa, California was 14.0 °F-10.0 °C which occurred on December 22, 1990.
Lowest Temperatures: All-Time By Year
Napa Weather by Month
Averages based on the years 1991–2020
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
☀️ Average high (°F°C) 58.414.7 63.217.3 67.319.6 71.822.1 76.424.7 82.027.8 83.228.5 83.528.6 84.329.0 77.925.5 66.118.9 58.214.6 72.722.6
🌙 Average low (°F°C) 40.24.6 41.85.4 43.66.5 45.57.5 49.99.9 53.612.0 55.413.0 55.413.0 53.411.9 49.49.6 43.56.4 39.84.3 47.78.7
☀️ Record high (°F°C) 84.929.4 81.027.2 91.933.3 95.035.0 104.040.0 113.045.0 111.944.4 107.141.7 111.043.9 106.041.1 89.131.7 81.027.2 113.045.0
🌙 Record low (°F°C) 19.0-7.2 23.0-5.0 23.0-5.0 27.0-2.8 30.0-1.1 34.01.1 37.93.3 37.02.8 36.02.2 28.0-2.2 25.0-3.9 14.0-10.0 14.0-10.0
💧 Average precipitation (inchescm) 5.113.0 4.912.4 3.69.1 1.84.4 1.02.7 0.20.6 0.00.0 0.10.1 0.10.2 1.33.4 2.87.1 5.513.9 26.467.1
💧 Daily % chance precipitation 38.8 36.3 30.6 22.2 11.9 3.7 0.1 0.5 3.3 12.0 26.8 38.4 18.6
❄️ Average snow (inchescm) 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0
More Napa Weather Records
1901–2022
Highest daily low 80.1 °F26.7 °C May 15, 2008
Lowest daily high 30.0 °F-1.1 °C February 4, 1903
Most daily precipitation 5.9 inches14.9 cm November 21, 1977
Most monthly precipitation 16.1 inches41.0 cm December 1955
Most yearly precipitation 51.2 inches130.2 cm 1983
Earliest freeze October 12 1932
Latest freeze May 18 1974
Most daily snow 2.5 inches6.4 cm January 6, 1907
Most monthly snow 2.5 inches6.4 cm January 1907
Most yearly snow 2.5 inches6.4 cm 1907
Napa Weather Streaks
Most consecutive days...
With precipitation 24 days Jan 31 – Feb 23, 1998
Without precipitation 175 days May 1 – Oct 22, 1987
High temperature ≥ 80 °F27 °C 60 days Jun 29 – Aug 27, 1932
High temperature ≥ 90 °F32 °C 11 days Sep 22 – Oct 2, 1970
High temperature ≥ 100 °F38 °C 7 days Jul 2–8, 1905
Napa Weather by Year
More
Weather Station Details
Years Station Coordinates
1901–2022 Napa State Hospital location