Frost Dates for Plummer, ID

Based on data from Plummer 3 Wsw weather station, 3 miles away

Frost Dates

Last Spring Frost (50%) iA 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. May 11
First Fall Frost (50%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. October 5
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly 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 21
First Fall Frost September 29

Hard Freeze (28°F)

Last Spring Hard Freeze April 22
First Fall Hard Freeze October 19
47.34°N, -116.89°W © OpenStreetMap

Growing Season

147 Days May 11 to October 5

USDA Hardiness Zone iHardiness 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 7a

Avg. annual minimum: 0 to 5°F (−18 to −15°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

Dsb Warm-Summer Continental (Dry Summer)

Warm, dry summers and cold, snowy winters. Common in mountain regions. Moderate growing season with irrigation needs in summer.

Köppen climate map

Temperature

20° 40° 60° 80°
30°
High: 37°F
Avg: 30°F
Low: 24°F
Jan
32°
High: 40°F
Avg: 32°F
Low: 25°F
Feb
38°
High: 47°F
Avg: 38°F
Low: 29°F
Mar
45°
High: 55°F
Avg: 45°F
Low: 34°F
Apr
53°
High: 65°F
Avg: 53°F
Low: 41°F
May
57°
High: 70°F
Avg: 57°F
Low: 45°F
Jun
67°
High: 81°F
Avg: 67°F
Low: 52°F
Jul
67°
High: 83°F
Avg: 67°F
Low: 51°F
Aug
58°
High: 73°F
Avg: 58°F
Low: 44°F
Sep
47°
High: 57°F
Avg: 47°F
Low: 36°F
Oct
36°
High: 43°F
Avg: 36°F
Low: 30°F
Nov
29°
High: 35°F
Avg: 29°F
Low: 23°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 5.7"
5.7"
5.71"
Jan
4.2"
4.22"
Feb
4.4"
4.37"
Mar
3.7"
3.70"
Apr
3.7"
3.72"
May
3.4"
3.40"
Jun
2.8"
2.80"
Jul
2.8"
2.79"
Aug
2.8"
2.84"
Sep
4.0"
3.96"
Oct
5.1"
5.13"
Nov
5.6"
5.62"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h15.5h15.5h14h12.5h10.5h9h8.5h
Jan: 7:40 AM – 4:20 PM · 8h 40m
Feb: 6:59 AM – 5:01 PM · 10h 01m
Mar: 6:12 AM – 5:48 PM · 11h 36m
Apr: 5:19 AM – 6:41 PM · 13h 23m
May: 4:33 AM – 7:27 PM · 14h 53m
Jun: 4:09 AM – 7:51 PM · 15h 43m
Jul: 4:19 AM – 7:41 PM · 15h 22m
Aug: 4:58 AM – 7:02 PM · 14h 03m
Sep: 5:50 AM – 6:10 PM · 12h 19m
Oct: 6:42 AM – 5:18 PM · 10h 35m
Nov: 7:28 AM – 4:32 PM · 9h 03m
Dec: 7:52 AM – 4:08 PM · 8h 17m
Daylight Longest: 15h 44m · Shortest: 8h 16m

Nearby Stations

Saint Maries, IDMay 3 - October 4 Rosalia, WAMay 7 - September 28 Potlatch 3 Nne, ID May 15 - September 21 Coeur D'Alene, ID April 22 - October 18 Spokane 17 Ssw, WA May 30 - September 4 Spokane Felts Fld, WA April 26 - October 15

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