Frost Dates for Spirit Lake, ID

Based on data from Bayview Model Basin weather station, 14 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 22
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. September 22
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 28
First Fall Frost September 15

Hard Freeze (28°F)

Last Spring Hard Freeze May 4
First Fall Hard Freeze October 4
47.97°N, -116.87°W © OpenStreetMap

Growing Season

123 Days May 22 to September 22

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 6b

Avg. annual minimum: −5 to 0°F (−21 to −18°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°
29°
High: 35°F
Avg: 29°F
Low: 23°F
Jan
31°
High: 38°F
Avg: 31°F
Low: 23°F
Feb
37°
High: 45°F
Avg: 37°F
Low: 28°F
Mar
44°
High: 54°F
Avg: 44°F
Low: 33°F
Apr
52°
High: 64°F
Avg: 52°F
Low: 39°F
May
58°
High: 71°F
Avg: 58°F
Low: 45°F
Jun
65°
High: 80°F
Avg: 65°F
Low: 50°F
Jul
64°
High: 80°F
Avg: 64°F
Low: 49°F
Aug
56°
High: 69°F
Avg: 56°F
Low: 42°F
Sep
44°
High: 54°F
Avg: 44°F
Low: 33°F
Oct
35°
High: 42°F
Avg: 35°F
Low: 27°F
Nov
28°
High: 34°F
Avg: 28°F
Low: 22°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 5.3"
4.5"
4.48"
Jan
3.4"
3.43"
Feb
4.3"
4.26"
Mar
3.6"
3.57"
Apr
3.9"
3.91"
May
3.6"
3.58"
Jun
3.4"
3.42"
Jul
3.6"
3.62"
Aug
3.9"
3.89"
Sep
5.0"
4.96"
Oct
5.3"
5.30"
Nov
4.8"
4.76"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h16h15.5h14h12.5h10.5h9h8h
Jan: 7:42 AM – 4:18 PM · 8h 35m
Feb: 7:01 AM – 4:59 PM · 9h 58m
Mar: 6:13 AM – 5:47 PM · 11h 35m
Apr: 5:18 AM – 6:42 PM · 13h 25m
May: 4:31 AM – 7:29 PM · 14h 58m
Jun: 4:06 AM – 7:54 PM · 15h 49m
Jul: 4:16 AM – 7:44 PM · 15h 28m
Aug: 4:57 AM – 7:03 PM · 14h 06m
Sep: 5:50 AM – 6:10 PM · 12h 20m
Oct: 6:43 AM – 5:17 PM · 10h 33m
Nov: 7:31 AM – 4:29 PM · 8h 59m
Dec: 7:54 AM – 4:06 PM · 8h 11m
Daylight Longest: 15h 50m · Shortest: 8h 10m

Nearby Stations

Sandpoint Exp Stn, ID May 8 - September 28 Coeur D'Alene, ID April 22 - October 18 Cabinet Gorge, ID May 9 - October 8 Newport, WAMay 12 - September 21 Heron 2 Nw, MT May 20 - September 20 Priest Rvr Exp Stn, ID May 20 - September 13

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