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Weather & Climate in Parkway, CA

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Parkway enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 48°F in January while summers reach 76°F in July. The area gets 330 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 18.4 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 48. The city sits at an elevation of 22 feet.

Temperature

48°F Jan (9°C) 76°F Jul (24°C)
Annual Average62.2°F
15% above US avg
January Average48°F (9°C)
July Average76°F (24°C)
Sunny Days330 days/yr

Geography

Elevation22 ft (7 m)
Area2.4 sq mi (6.3 km²)
Population Density6,589/sq mi
Coordinates38.4993°N, 121.4520°W
TimezoneAmerica/Los_Angeles
CountySacramento County County
Nearest AirportSacramento International (SMF)
15 miles away

Precipitation & Snow

Annual Rainfall 18.4"
52% below US avg
Snowfall 0.0"
Wettest Month (Jan) 3.86"
Driest Month (Jul) 0.08"

Air Quality

AQI Median48.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively High
Risk Score98.1 / 100
Social Vulnerability37.4 / 100
Community Resilience57.0 / 100

Hazard Breakdown

Tornado Relatively Moderate
Earthquake Relatively High
Wildfire Relatively Moderate
Flood Relatively High
Hail Relatively Low
Strong Wind Very Low
Heat Wave Relatively Moderate
Winter Weather Very Low
Lightning Relatively Moderate
Drought Relatively High
Cold Wave No Rating
Landslide Relatively Low
Coastal Flood No Rating
Volcano Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

4,251 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.0.

Aug 24, 2014 The 2014 South Napa, California Earthquake M6.0 81 km 11 km
Aug 10, 2016 20 km NNE of Upper Lake, California M5.1 149 km 14 km
Sep 3, 2000 5 km WSW of Yountville, California M4.9 85 km 9 km
Sep 4, 1995 13 km SW of Middletown, California M4.8 114 km 7 km
Oct 30, 1998 4 km N of Tahoe Vista, California M4.8 150 km 1 km
Jun 26, 2005 8 km NNW of Tahoe Vista, California M4.8 148 km -2 km
May 12, 2006 7 km W of Cobb, California M4.7 123 km 4 km
May 21, 1996 8 km ESE of East Foothills, California M4.7 129 km 8 km
Aug 11, 1993 14 km ESE of Alum Rock, California M4.7 134 km 9 km
Jan 2, 2025 4 km NW of Cobb, CA M4.7 120 km 1 km
May 7, 2021 19km NW of Truckee, CA M4.7 145 km 10 km
Aug 18, 1999 0 km S of Bolinas, California M4.6 126 km 8 km
Jan 11, 2000 6 km N of Geyserville, California M4.6 131 km 6 km
Feb 18, 2004 4 km WNW of Cobb, California M4.6 120 km 3 km
Jan 12, 2014 8 km W of Cobb, California M4.5 124 km 2 km
Sep 19, 2023 15 km SW of Westley, CA M4.5 119 km 4 km
Aug 3, 2006 5 km W of Glen Ellen, California M4.5 100 km 9 km
Jun 8, 2024 7 km NW of The Geysers, CA M4.5 124 km 4 km
Sep 19, 1992 7 km NW of Cobb, California M4.5 123 km 3 km
Apr 24, 2007 7 km WSW of Cobb, California M4.5 121 km 2 km
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.

Tornado History

74 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 1 injury.

Date Rating Distance Path Fatalities
Feb 7, 1978 EF2 22 km 1.9 mi 0
Jan 10, 2023 EF1 76 km 0.4 mi 0
Dec 24, 2015 EF1 37 km 6.2 mi 0
Oct 22, 2012 EF1 68 km 4.0 mi 0
Oct 22, 2012 EF1 65 km 2.0 mi 0
Oct 22, 2012 EF1 65 km 0.3 mi 0
Jan 23, 2010 EF1 71 km 1.6 mi 0
Dec 12, 1996 EF1 97 km 0.6 mi 0
Dec 17, 1992 EF1 92 km 5.0 mi 0
Apr 19, 1988 EF1 45 km 0.2 mi 0
Apr 19, 1988 EF1 32 km 1.0 mi 0
Mar 22, 1983 EF1 26 km 2.0 mi 0
Jun 28, 1970 EF1 99 km 2.3 mi 0
May 31, 1967 EF1 60 km 0.1 mi 0
Jan 14, 2023 EF0 34 km 0.3 mi 0
Nov 8, 2022 EF0 22 km 0.8 mi 0
Nov 18, 2020 EF0 42 km 4.4 mi 0
May 18, 2020 EF0 38 km 0.1 mi 0
Sep 28, 2019 EF0 27 km 1.7 mi 0
Feb 2, 2019 EF0 64 km 0.3 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).

Tsunami History

4 tsunamis recorded within 500 km. Highest wave on record: 4.5 m (15 ft).

Year Location Cause Max Wave Deaths Distance
1868 N. CALIFORNIA Eruption + Earthquake 4.5 m 30 105 km
1856 N. CALIFORNIA Eruption + Earthquake 0.6 m - 134 km
1906 N. CALIFORNIA Eruption + Earthquake 0.1 m - 128 km
1865 N. CALIFORNIA Eruption + Earthquake - - 150 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Clear Lake (126 km).

Name Type Elevation Last Eruption Distance
Clear Lake Volcanic field 1,439 m (4,721 ft) Unknown 126 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: HENNESSEY (314,241 acres, 2020).

Year Name Acres Burned Distance
2020 HENNESSEY 314,241 74 km
2014 KING 99,070 92 km
2015 ROCKY 96,125 98 km
2018 COUNTY 92,450 64 km
2022 MOSQUITO 77,858 89 km
2015 BUTTE 72,894 79 km
2020 GLASS 68,020 96 km
2017 NUNS 56,883 93 km
2017 ATLAS 51,664 70 km
2004 RUMSEY 39,335 77 km
1999 SIXTEEN 37,162 83 km
1988 49R 36,673 86 km
1988 MILLER 35,750 56 km
1992 CLEVELAND 21,835 96 km
2012 SIXTEEN COMPLEX 18,191 93 km
1992 GULCH 18,019 92 km
2017 CASCADE 16,155 96 km
2024 CORRAL 16,138 96 km
2006 ZAM ASSIST 14,404 49 km
2018 WAVERLY 12,238 77 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 48°F (9°C) 3.9 in Wettest
February 51°F (11°C) 3.4 in
March 55°F (13°C) 2.8 in
April 60°F (15°C) 1.1 in
May 66°F (19°C) 0.5 in
June 72°F (22°C) 0.2 in
July 76°F (24°C) 0.1 in Warmest, Driest
August 74°F (23°C) 0.1 in
September 71°F (22°C) 0.3 in
October 64°F (18°C) 1.0 in
November 53°F (12°C) 2.5 in
December 46°F (8°C) 2.6 in Coldest

Parkway has a seasonal temperature swing of 30°F / from 46°F in December to 76°F in July. Total annual precipitation is 18.3 inches, with January being the wettest month (3.9") and July the driest (0.1").

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