Frost Dates for Plevna, MT

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 21
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 20
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 27
First Fall Frost September 14

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze May 11
First Fall Hard Freeze September 30
46.42°N, -104.52°W © OpenStreetMap

Growing Season

122 Days May 21 to September 20

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°
18°
High: 30°
Avg: 18°
Low: 6°
Jan
22°
High: 33°
Avg: 22°
Low: 10°
Feb
33°
High: 45°
Avg: 33°
Low: 20°
Mar
43°
High: 57°
Avg: 43°
Low: 30°
Apr
54°
High: 67°
Avg: 54°
Low: 41°
May
63°
High: 77°
Avg: 63°
Low: 50°
Jun
71°
High: 86°
Avg: 71°
Low: 56°
Jul
70°
High: 86°
Avg: 70°
Low: 54°
Aug
60°
High: 75°
Avg: 60°
Low: 44°
Sep
45°
High: 58°
Avg: 45°
Low: 31°
Oct
31°
High: 43°
Avg: 31°
Low: 19°
Nov
21°
High: 32°
Avg: 21°
Low: 9°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 1" 2" 2.9"
1.2"
1.24"
Jan
1.2"
1.17"
Feb
1.6"
1.65"
Mar
2.1"
2.13"
Apr
2.9"
2.92"
May
2.7"
2.74"
Jun
2.5"
2.49"
Jul
2.2"
2.19"
Aug
2.5"
2.54"
Sep
2.0"
1.96"
Oct
1.5"
1.46"
Nov
1.2"
1.24"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h12h13h15h16h15h14h12h11h9h8h
Jan: 7:37 AM – 4:23 PM · 8h 47m
Feb: 6:57 AM – 5:03 PM · 10h 05m
Mar: 6:12 AM – 5:48 PM · 11h 36m
Apr: 5:20 AM – 6:40 PM · 13h 20m
May: 4:36 AM – 7:24 PM · 14h 48m
Jun: 4:12 AM – 7:48 PM · 15h 35m
Jul: 4:22 AM – 7:38 PM · 15h 16m
Aug: 5:00 AM – 6:60 PM · 13h 60m
Sep: 5:51 AM – 6:09 PM · 12h 19m
Oct: 6:41 AM – 5:19 PM · 10h 38m
Nov: 7:26 AM – 4:34 PM · 9h 09m
Dec: 7:48 AM – 4:12 PM · 8h 24m
Daylight Longest: 15h 37m · Shortest: 8h 23m

Nearby Stations

Baker, MTMay 12 - September 26 Baker Muni AP, MT May 16 - September 26 Carlyle 13 Nw, MT May 18 - September 29 Mildred 5 N, MT May 20 - September 22 Ekalaka, MTMay 20 - September 23 Mizpah 4 Nnw, MT May 22 - September 15

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