Frost Dates for Osburn, ID

Based on data from Wallace weather station, 4 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 5
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 2
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 11
First Fall Frost September 27

Hard Freeze (28°F)

Last Spring Hard Freeze April 19
First Fall Hard Freeze October 18
47.51°N, -116.00°W © OpenStreetMap

Growing Season

150 Days May 5 to October 2

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: 34°F
Avg: 29°F
Low: 24°F
Jan
32°
High: 39°F
Avg: 32°F
Low: 24°F
Feb
37°
High: 46°F
Avg: 37°F
Low: 29°F
Mar
44°
High: 55°F
Avg: 44°F
Low: 34°F
Apr
53°
High: 65°F
Avg: 53°F
Low: 41°F
May
59°
High: 71°F
Avg: 59°F
Low: 47°F
Jun
66°
High: 81°F
Avg: 66°F
Low: 51°F
Jul
66°
High: 81°F
Avg: 66°F
Low: 50°F
Aug
57°
High: 71°F
Avg: 57°F
Low: 44°F
Sep
45°
High: 55°F
Avg: 45°F
Low: 36°F
Oct
35°
High: 41°F
Avg: 35°F
Low: 29°F
Nov
29°
High: 33°F
Avg: 29°F
Low: 24°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 6" 6.3"
5.3"
5.27"
Jan
4.5"
4.55"
Feb
5.4"
5.42"
Mar
4.5"
4.54"
Apr
4.8"
4.83"
May
4.4"
4.37"
Jun
3.8"
3.78"
Jul
3.3"
3.32"
Aug
4.0"
4.05"
Sep
5.3"
5.32"
Oct
5.6"
5.61"
Nov
6.3"
6.30"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h15.5h15.5h14h12.5h10.5h9h8.5h
Jan: 7:40 AM – 4:20 PM · 8h 39m
Feb: 6:60 AM – 5:00 PM · 10h 01m
Mar: 6:12 AM – 5:48 PM · 11h 35m
Apr: 5:18 AM – 6:42 PM · 13h 23m
May: 4:33 AM – 7:27 PM · 14h 54m
Jun: 4:08 AM – 7:52 PM · 15h 44m
Jul: 4:18 AM – 7:42 PM · 15h 24m
Aug: 4:58 AM – 7:02 PM · 14h 04m
Sep: 5:50 AM – 6:10 PM · 12h 19m
Oct: 6:43 AM – 5:17 PM · 10h 35m
Nov: 7:29 AM – 4:31 PM · 9h 02m
Dec: 7:52 AM – 4:08 PM · 8h 16m
Daylight Longest: 15h 46m · Shortest: 8h 14m

Nearby Stations

Mullan, IDMay 12 - September 30 Kellogg, IDMay 14 - September 26 Prichard 3 Ese, ID May 31 - September 5 Mullan Pass Vor/Dme, ID June 10 - September 23 Haugan 1 W, MT Thompson Falls Ph, MT May 7 - October 4

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