Frost Dates for Downieville, CA

Elevation: 889 m

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. April 28
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. October 25

30% Probability

Only a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.
Last Spring Frost May 6
First Fall Frost October 19

Hard Freeze (28°F)

Last Spring Hard Freeze April 6
First Fall Hard Freeze November 10
39.56°N, 120.82°W © OpenStreetMap

Growing Season

180 Days April 28 to October 25

USDA Hardiness Zone

Hardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.
Zone 8b

Avg. annual minimum: 15 to 20°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Csb Warm-Summer Mediterranean

Warm, dry summers and mild, wet winters. Similar to hot-summer Mediterranean but cooler. Great for a wide range of vegetables and fruit trees with moderate water needs.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January48°39°30°
February52°42°31°
March58°45°33°
April63°50°36°
May72°57°42°
June81°64°46°
July89°70°51°
August89°69°50°
September83°65°46°
October72°56°39°
November56°44°33°
December46°38°29°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January18.9
February17.6
March16.7
April11.7
May9.2
June2.9
July0.0
August0.0
September0.0
October10.4
November13.8
December19.7

Sunrise / Sunset

Daylight Longest: 14h 48m · Shortest: 9h 12m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January7:15 AM4:45 PM9h 30m
February6:45 AM5:15 PM10h 30m
March6:09 AM5:51 PM11h 41m
April5:29 AM6:31 PM13h 03m
May4:55 AM7:05 PM14h 11m
June4:37 AM7:23 PM14h 47m
July4:44 AM7:16 PM14h 32m
August5:13 AM6:47 PM13h 34m
September5:53 AM6:07 PM12h 15m
October6:32 AM5:28 PM10h 56m
November7:07 AM4:53 PM9h 47m
December7:24 AM4:36 PM9h 13m

Nearby Stations

Bowman Dam, CAMay 12 - October 29 Strawberry Valley, CA May 4 - October 30 Lake Spaulding, CA May 22 - October 16 Blue Canyon AP, CA May 4 - November 4 Nevada City, CA April 14 - November 20 Dobbins 1 S, CA April 1 - November 17

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