Frost Dates for Grassy Butte 2ene, 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 18
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 9
First Fall Hard Freeze October 3
47.40°N, -103.21°W © OpenStreetMap

Growing Season

128 Days May 18 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 4b

Learn more

Temperature

0° 30° 60° 90°
15°
High: 24°
Avg: 15°
Low: 6°
Jan
19°
High: 28°
Avg: 19°
Low: 10°
Feb
30°
High: 41°
Avg: 30°
Low: 19°
Mar
43°
High: 55°
Avg: 43°
Low: 30°
Apr
53°
High: 66°
Avg: 53°
Low: 40°
May
62°
High: 75°
Avg: 62°
Low: 50°
Jun
69°
High: 83°
Avg: 69°
Low: 55°
Jul
68°
High: 83°
Avg: 68°
Low: 54°
Aug
58°
High: 72°
Avg: 58°
Low: 45°
Sep
44°
High: 55°
Avg: 44°
Low: 33°
Oct
29°
High: 39°
Avg: 29°
Low: 20°
Nov
19°
High: 27°
Avg: 19°
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" 4.1"
1.2"
1.24"
Jan
1.1"
1.07"
Feb
1.3"
1.31"
Mar
2.5"
2.46"
Apr
4.1"
4.07"
May
3.9"
3.90"
Jun
3.7"
3.72"
Jul
3.7"
3.72"
Aug
3.4"
3.35"
Sep
2.5"
2.45"
Oct
1.3"
1.27"
Nov
1.2"
1.24"
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 03m
Dec: 7:52 AM – 4:08 PM · 8h 16m
Daylight Longest: 15h 45m · Shortest: 8h 15m

Nearby Stations

Watford City 14s, ND May 22 - September 17 Fairfield, ND May 12 - September 28 Killdeer, NDMay 21 - September 23 Dickinson Rch Hq, ND May 18 - September 24 Watford City, ND May 9 - September 27 Dunn Ctr 1e, ND May 20 - September 21

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