Frost Dates for Cooperstown, ND

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 17
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 23
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 24
First Fall Frost September 18

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze May 7
First Fall Hard Freeze October 2
47.41°N, -98.04°W © OpenStreetMap

Growing Season

129 Days May 17 to September 23

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 3b

Learn more

Temperature

-10° 20° 50° 80°
7°
High: 16°
Avg: 7°
Low: -3°
Jan
11°
High: 21°
Avg: 11°
Low: 1°
Feb
24°
High: 34°
Avg: 24°
Low: 15°
Mar
41°
High: 52°
Avg: 41°
Low: 29°
Apr
54°
High: 66°
Avg: 54°
Low: 41°
May
64°
High: 75°
Avg: 64°
Low: 52°
Jun
68°
High: 79°
Avg: 68°
Low: 56°
Jul
66°
High: 78°
Avg: 66°
Low: 53°
Aug
57°
High: 69°
Avg: 57°
Low: 45°
Sep
43°
High: 54°
Avg: 43°
Low: 32°
Oct
26°
High: 36°
Avg: 26°
Low: 17°
Nov
13°
High: 22°
Avg: 13°
Low: 4°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 6" 6.2"
2.5"
2.48"
Jan
3.0"
2.96"
Feb
4.5"
4.46"
Mar
3.7"
3.68"
Apr
4.6"
4.60"
May
6.2"
6.20"
Jun
6.2"
6.20"
Jul
5.5"
5.49"
Aug
4.9"
4.87"
Sep
4.6"
4.57"
Oct
3.3"
3.25"
Nov
2.6"
2.57"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h12h13h15h16h15h14h12h11h9h8h
Jan: 7:40 AM – 4:20 PM · 8h 40m
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 23m
Aug: 4:58 AM – 7:02 PM · 14h 04m
Sep: 5:50 AM – 6:10 PM · 12h 19m
Oct: 6:42 AM – 5:18 PM · 10h 35m
Nov: 7:29 AM – 4:31 PM · 9h 02m
Dec: 7:52 AM – 4:08 PM · 8h 16m
Daylight Longest: 15h 45m · Shortest: 8h 15m

Nearby Stations

Colgate, NDMay 10 - September 24 Mc Henry 3w, ND May 12 - September 28 Valley City 3 Nnw, ND May 13 - September 26 Mayville, NDMay 13 - September 27 Larimore 4sw, ND May 11 - September 28 Edmunds Arrowwood Ref, ND May 11 - September 28

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