Frost Dates for Sandpoint, ID

Based on data from Sandpoint Exp Stn weather station, 1 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 8
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 28
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 15
First Fall Frost September 22

Hard Freeze (28°F)

Last Spring Hard Freeze April 21
First Fall Hard Freeze October 10
48.28°N, -116.55°W © OpenStreetMap

Growing Season

143 Days May 8 to September 28

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°
28°
High: 34°F
Avg: 28°F
Low: 23°F
Jan
31°
High: 38°F
Avg: 31°F
Low: 24°F
Feb
38°
High: 46°F
Avg: 38°F
Low: 29°F
Mar
45°
High: 56°F
Avg: 45°F
Low: 35°F
Apr
54°
High: 66°F
Avg: 54°F
Low: 42°F
May
60°
High: 72°F
Avg: 60°F
Low: 48°F
Jun
67°
High: 82°F
Avg: 67°F
Low: 52°F
Jul
66°
High: 82°F
Avg: 66°F
Low: 50°F
Aug
57°
High: 72°F
Avg: 57°F
Low: 42°F
Sep
45°
High: 56°F
Avg: 45°F
Low: 34°F
Oct
35°
High: 42°F
Avg: 35°F
Low: 29°F
Nov
28°
High: 34°F
Avg: 28°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" 5.8"
5.1"
5.08"
Jan
3.9"
3.92"
Feb
3.9"
3.86"
Mar
3.4"
3.43"
Apr
3.6"
3.62"
May
3.6"
3.60"
Jun
3.4"
3.37"
Jul
2.9"
2.87"
Aug
3.0"
2.95"
Sep
4.4"
4.38"
Oct
5.8"
5.79"
Nov
5.7"
5.73"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h16h15.5h14h12.5h10.5h9h8h
Jan: 7:44 AM – 4:16 PM · 8h 33m
Feb: 7:01 AM – 4:59 PM · 9h 57m
Mar: 6:13 AM – 5:47 PM · 11h 35m
Apr: 5:17 AM – 6:43 PM · 13h 26m
May: 4:30 AM – 7:30 PM · 14h 60m
Jun: 4:04 AM – 7:56 PM · 15h 51m
Jul: 4:15 AM – 7:45 PM · 15h 30m
Aug: 4:56 AM – 7:04 PM · 14h 08m
Sep: 5:50 AM – 6:10 PM · 12h 20m
Oct: 6:44 AM – 5:16 PM · 10h 32m
Nov: 7:32 AM – 4:28 PM · 8h 57m
Dec: 7:56 AM – 4:04 PM · 8h 08m
Daylight Longest: 15h 53m · Shortest: 8h 07m

Nearby Stations

Priest Rvr Exp Stn, ID May 20 - September 13 Bayview Model Basin, ID May 22 - September 22 Newport, WAMay 12 - September 21 Cabinet Gorge, ID May 9 - October 8 Heron 2 Nw, MT May 20 - September 20 Bonners Ferry, ID April 30 - October 4

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