Frost Dates for Belle Fourche, SD

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 16
First Fall Frost September 24

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze April 30
First Fall Hard Freeze October 10
44.67°N, -103.85°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 5a

Learn more

Temperature

10° 30° 50° 70° 90°
25°
High: 37°
Avg: 25°
Low: 13°
Jan
27°
High: 39°
Avg: 27°
Low: 15°
Feb
37°
High: 50°
Avg: 37°
Low: 24°
Mar
46°
High: 59°
Avg: 46°
Low: 33°
Apr
56°
High: 69°
Avg: 56°
Low: 44°
May
67°
High: 79°
Avg: 67°
Low: 54°
Jun
74°
High: 87°
Avg: 74°
Low: 60°
Jul
72°
High: 87°
Avg: 72°
Low: 57°
Aug
62°
High: 78°
Avg: 62°
Low: 47°
Sep
49°
High: 62°
Avg: 49°
Low: 35°
Oct
36°
High: 48°
Avg: 36°
Low: 24°
Nov
26°
High: 37°
Avg: 26°
Low: 15°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 5.0"
1.7"
1.73"
Jan
1.9"
1.87"
Feb
3.3"
3.29"
Mar
5.0"
4.99"
Apr
4.8"
4.76"
May
4.4"
4.39"
Jun
3.8"
3.79"
Jul
3.6"
3.57"
Aug
2.9"
2.90"
Sep
2.1"
2.08"
Oct
1.9"
1.85"
Nov
2.3"
2.31"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h12h13h15h15h15h14h12h11h9h9h
Jan: 7:31 AM – 4:29 PM · 8h 59m
Feb: 6:54 AM – 5:06 PM · 10h 12m
Mar: 6:11 AM – 5:49 PM · 11h 38m
Apr: 5:22 AM – 6:38 PM · 13h 15m
May: 4:41 AM – 7:19 PM · 14h 37m
Jun: 4:19 AM – 7:41 PM · 15h 22m
Jul: 4:28 AM – 7:32 PM · 15h 04m
Aug: 5:04 AM – 6:56 PM · 13h 52m
Sep: 5:51 AM – 6:09 PM · 12h 18m
Oct: 6:38 AM – 5:22 PM · 10h 43m
Nov: 7:20 AM – 4:40 PM · 9h 19m
Dec: 7:41 AM – 4:19 PM · 8h 38m
Daylight Longest: 15h 23m · Shortest: 8h 37m

Nearby Stations

Spearfish, SDMay 12 - October 2 Bear Ridge, SD May 17 - September 27 Colony, WYMay 7 - October 3 Newell, SDMay 8 - October 1 Deadwood, SDMay 24 - September 25 Belle Fourche 22 Nnw, SD May 15 - September 24

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