Frost Dates for Bismarck 2.4 Nnw, 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 10
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 30
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 25

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze May 1
First Fall Hard Freeze October 9
46.83°N, -100.80°W © OpenStreetMap

Growing Season

143 Days May 10 to September 30

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

Learn more

Temperature

0° 30° 60° 90°
13°
High: 22°
Avg: 13°
Low: 4°
Jan
17°
High: 27°
Avg: 17°
Low: 7°
Feb
29°
High: 40°
Avg: 29°
Low: 18°
Mar
42°
High: 54°
Avg: 42°
Low: 29°
Apr
55°
High: 66°
Avg: 55°
Low: 43°
May
64°
High: 76°
Avg: 64°
Low: 53°
Jun
70°
High: 82°
Avg: 70°
Low: 58°
Jul
68°
High: 80°
Avg: 68°
Low: 56°
Aug
59°
High: 71°
Avg: 59°
Low: 46°
Sep
45°
High: 56°
Avg: 45°
Low: 34°
Oct
30°
High: 40°
Avg: 30°
Low: 20°
Nov
18°
High: 27°
Avg: 18°
Low: 10°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 4.2"
1.1"
1.12"
Jan
1.1"
1.12"
Feb
1.7"
1.66"
Mar
2.6"
2.56"
Apr
3.0"
2.99"
May
3.7"
3.70"
Jun
4.2"
4.19"
Jul
2.7"
2.67"
Aug
2.6"
2.59"
Sep
1.8"
1.83"
Oct
1.0"
1.04"
Nov
1.2"
1.21"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h12h13h15h16h15h14h12h11h9h8h
Jan: 7:38 AM – 4:22 PM · 8h 44m
Feb: 6:58 AM – 5:02 PM · 10h 03m
Mar: 6:12 AM – 5:48 PM · 11h 36m
Apr: 5:19 AM – 6:41 PM · 13h 21m
May: 4:35 AM – 7:25 PM · 14h 50m
Jun: 4:11 AM – 7:49 PM · 15h 39m
Jul: 4:21 AM – 7:39 PM · 15h 19m
Aug: 4:59 AM – 7:01 PM · 14h 01m
Sep: 5:51 AM – 6:09 PM · 12h 19m
Oct: 6:42 AM – 5:18 PM · 10h 37m
Nov: 7:27 AM – 4:33 PM · 9h 06m
Dec: 7:50 AM – 4:10 PM · 8h 21m
Daylight Longest: 15h 40m · Shortest: 8h 20m

Nearby Stations

Bismarck Wfo, ND May 14 - September 30 Bismarck, NDMay 14 - September 27 Mandan Exp Stn, ND May 13 - September 27 Wilton, NDMay 11 - September 30 Center 4se, ND May 11 - September 29 Moffit 3 Se, ND May 11 - September 29

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