Frost Dates for Ingomar 9 E, 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 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 14

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze May 10
First Fall Hard Freeze September 28
46.57°N, -107.19°W © OpenStreetMap

Growing Season

121 Days May 21 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°
18°
High: 32°
Avg: 18°
Low: 4°
Jan
23°
High: 36°
Avg: 23°
Low: 9°
Feb
34°
High: 48°
Avg: 34°
Low: 19°
Mar
44°
High: 58°
Avg: 44°
Low: 29°
Apr
54°
High: 68°
Avg: 54°
Low: 39°
May
63°
High: 78°
Avg: 63°
Low: 48°
Jun
72°
High: 88°
Avg: 72°
Low: 55°
Jul
70°
High: 88°
Avg: 70°
Low: 52°
Aug
59°
High: 76°
Avg: 59°
Low: 42°
Sep
44°
High: 59°
Avg: 44°
Low: 29°
Oct
31°
High: 45°
Avg: 31°
Low: 17°
Nov
21°
High: 34°
Avg: 21°
Low: 7°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 4.7"
1.9"
1.89"
Jan
1.4"
1.40"
Feb
2.1"
2.15"
Mar
3.5"
3.54"
Apr
4.7"
4.73"
May
4.6"
4.62"
Jun
4.5"
4.48"
Jul
4.7"
4.65"
Aug
4.0"
3.96"
Sep
3.5"
3.50"
Oct
2.6"
2.63"
Nov
1.8"
1.79"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h12h13h15h16h15h14h12h11h9h8h
Jan: 7:37 AM – 4:23 PM · 8h 46m
Feb: 6:58 AM – 5:02 PM · 10h 04m
Mar: 6:12 AM – 5:48 PM · 11h 36m
Apr: 5:20 AM – 6:40 PM · 13h 21m
May: 4:36 AM – 7:24 PM · 14h 49m
Jun: 4:12 AM – 7:48 PM · 15h 37m
Jul: 4:22 AM – 7:38 PM · 15h 17m
Aug: 4:60 AM – 7:00 PM · 14h 00m
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 08m
Dec: 7:48 AM – 4:12 PM · 8h 23m
Daylight Longest: 15h 38m · Shortest: 8h 22m

Nearby Stations

Hysham, MTMay 10 - September 29 Forsyth, MTMay 9 - September 29 Melstone, MTMay 10 - September 29 Mosby 4 Ene, MTMay 5 - October 4 Cohagen, MTMay 25 - September 14 Hysham 25 Sse, MT May 26 - September 16

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