Frost Dates for Casselton, ND

Based on data from Casselton Agronomy Farm weather station, 2 miles away

Elevation: 935 ft

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 9
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 1
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 14
First Fall Frost September 26

Hard Freeze (28°F)

Last Spring Hard Freeze April 29
First Fall Hard Freeze October 10
46.90°N, -97.21°W © OpenStreetMap

Growing Season

145 Days May 9 to October 1

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 4a

Avg. annual minimum: −30 to −25°F (−34 to −32°C)

Learn more

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

Dfb Warm-Summer Continental

Warm summers and cold, snowy winters. A shorter growing season than hot-summer continental. Hardy vegetables, root crops, and cool-season greens do well. Season extension is valuable.

Köppen climate map

Temperature

-10° 20° 50° 80°
8°
High: 17°F
Avg: 8°F
Low: -1°F
Jan
12°
High: 22°F
Avg: 12°F
Low: 2°F
Feb
26°
High: 35°F
Avg: 26°F
Low: 17°F
Mar
42°
High: 53°F
Avg: 42°F
Low: 31°F
Apr
55°
High: 68°F
Avg: 55°F
Low: 43°F
May
66°
High: 77°F
Avg: 66°F
Low: 55°F
Jun
70°
High: 81°F
Avg: 70°F
Low: 59°F
Jul
68°
High: 80°F
Avg: 68°F
Low: 56°F
Aug
59°
High: 71°F
Avg: 59°F
Low: 46°F
Sep
45°
High: 56°F
Avg: 45°F
Low: 34°F
Oct
29°
High: 38°F
Avg: 29°F
Low: 20°F
Nov
15°
High: 23°F
Avg: 15°F
Low: 7°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"
2.5"
2.48"
Jan
2.7"
2.67"
Feb
4.1"
4.07"
Mar
3.8"
3.81"
Apr
4.7"
4.72"
May
6.3"
6.35"
Jun
6.1"
6.11"
Jul
5.3"
5.26"
Aug
5.6"
5.62"
Sep
4.3"
4.30"
Oct
2.5"
2.52"
Nov
2.3"
2.28"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h15.5h15.5h14h12.5h10.5h9h8.5h
Jan: 8:17 AM – 5:00 PM · 8h 44m
Feb: 7:42 AM – 5:45 PM · 10h 03m
Mar: 7:51 AM – 7:27 PM · 11h 36m
Apr: 6:48 AM – 8:10 PM · 13h 22m
May: 5:60 AM – 8:50 PM · 14h 50m
Jun: 5:40 AM – 9:19 PM · 15h 39m
Jul: 5:55 AM – 9:14 PM · 15h 19m
Aug: 6:32 AM – 8:34 PM · 14h 01m
Sep: 7:14 AM – 7:33 PM · 12h 19m
Oct: 7:56 AM – 6:32 PM · 10h 37m
Nov: 7:41 AM – 4:47 PM · 9h 06m
Dec: 8:14 AM – 4:35 PM · 8h 21m
Daylight Central Time (CT) Longest: 15h 41m · Shortest: 8h 19m

Nearby Stations

Fargo Hector Intl AP, ND May 10 - September 30 Fargo 3s, NDMay 4 - October 2 Moorhead, MNMay 5 - October 3 Georgetown 1 E, MN May 9 - October 1 Enderlin 2w, NDMay 3 - October 5 Colgate, NDMay 10 - September 24

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