Frost Dates for Loma, 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 20
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 19
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 26
First Fall Frost September 13

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze May 9
First Fall Hard Freeze September 29
47.94°N, -110.50°W © OpenStreetMap

Growing Season

122 Days May 20 to September 19

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 3b

Learn more

Temperature

0° 30° 60° 90°
21°
High: 34°
Avg: 21°
Low: 7°
Jan
24°
High: 38°
Avg: 24°
Low: 10°
Feb
34°
High: 49°
Avg: 34°
Low: 20°
Mar
45°
High: 59°
Avg: 45°
Low: 30°
Apr
54°
High: 69°
Avg: 54°
Low: 39°
May
62°
High: 77°
Avg: 62°
Low: 48°
Jun
70°
High: 88°
Avg: 70°
Low: 53°
Jul
69°
High: 87°
Avg: 69°
Low: 51°
Aug
58°
High: 76°
Avg: 58°
Low: 41°
Sep
45°
High: 61°
Avg: 45°
Low: 30°
Oct
32°
High: 46°
Avg: 32°
Low: 19°
Nov
23°
High: 36°
Avg: 23°
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" 4.4"
1.8"
1.76"
Jan
1.5"
1.47"
Feb
2.0"
2.05"
Mar
2.9"
2.93"
Apr
4.2"
4.20"
May
4.4"
4.42"
Jun
3.2"
3.19"
Jul
3.4"
3.44"
Aug
4.0"
4.02"
Sep
3.3"
3.29"
Oct
2.0"
1.96"
Nov
1.6"
1.62"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h12h13h15h16h15h14h12h11h9h8h
Jan: 7:42 AM – 4:18 PM · 8h 36m
Feb: 7:01 AM – 4:59 PM · 9h 59m
Mar: 6:13 AM – 5:47 PM · 11h 35m
Apr: 5:18 AM – 6:42 PM · 13h 25m
May: 4:31 AM – 7:29 PM · 14h 57m
Jun: 4:06 AM – 7:54 PM · 15h 48m
Jul: 4:16 AM – 7:44 PM · 15h 27m
Aug: 4:57 AM – 7:03 PM · 14h 06m
Sep: 5:50 AM – 6:10 PM · 12h 20m
Oct: 6:43 AM – 5:17 PM · 10h 34m
Nov: 7:31 AM – 4:29 PM · 8h 59m
Dec: 7:54 AM – 4:06 PM · 8h 12m
Daylight Longest: 15h 50m · Shortest: 8h 10m

Nearby Stations

Ft Benton, MT May 15 - September 22 Highwood 7 Ne, MT May 7 - October 2 Rudyard 19s, MT May 23 - September 19 Big Sandy, MT May 17 - September 25 Geraldine, MT May 14 - September 26 Shonkin 7 S, MT May 24 - September 21

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