Frost Dates for Alder 19s, MT

Frost Dates

This location has year-round freezing temperatures.

45.10°N, -112.09°W © OpenStreetMap

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

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Temperature

10° 30° 50° 70° 90°
22°
High: 33°
Avg: 22°
Low: 11°
Jan
25°
High: 36°
Avg: 25°
Low: 14°
Feb
33°
High: 45°
Avg: 33°
Low: 21°
Mar
39°
High: 53°
Avg: 39°
Low: 26°
Apr
48°
High: 63°
Avg: 48°
Low: 33°
May
55°
High: 70°
Avg: 55°
Low: 39°
Jun
62°
High: 81°
Avg: 62°
Low: 44°
Jul
61°
High: 79°
Avg: 61°
Low: 44°
Aug
53°
High: 70°
Avg: 53°
Low: 37°
Sep
42°
High: 56°
Avg: 42°
Low: 27°
Oct
30°
High: 41°
Avg: 30°
Low: 19°
Nov
21°
High: 31°
Avg: 21°
Low: 11°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 4.6"
1.9"
1.85"
Jan
2.1"
2.08"
Feb
2.6"
2.57"
Mar
3.1"
3.11"
Apr
4.1"
4.10"
May
4.6"
4.57"
Jun
3.6"
3.65"
Jul
3.5"
3.48"
Aug
4.4"
4.41"
Sep
3.9"
3.93"
Oct
2.1"
2.14"
Nov
1.6"
1.59"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h12h13h15h15h15h14h12h11h9h9h
Jan: 7:32 AM – 4:28 PM · 8h 56m
Feb: 6:55 AM – 5:05 PM · 10h 10m
Mar: 6:11 AM – 5:49 PM · 11h 37m
Apr: 5:22 AM – 6:38 PM · 13h 17m
May: 4:40 AM – 7:20 PM · 14h 40m
Jun: 4:18 AM – 7:42 PM · 15h 25m
Jul: 4:27 AM – 7:33 PM · 15h 06m
Aug: 5:03 AM – 6:57 PM · 13h 54m
Sep: 5:51 AM – 6:09 PM · 12h 18m
Oct: 6:39 AM – 5:21 PM · 10h 42m
Nov: 7:22 AM – 4:38 PM · 9h 17m
Dec: 7:43 AM – 4:17 PM · 8h 35m
Daylight Longest: 15h 26m · Shortest: 8h 34m

Nearby Stations

Alder 17 S, MT June 6 - September 14 Virginia City, MT June 4 - September 18 Laurin 2ne, MT May 24 - September 22 Ennis, MTJune 16 - September 4 Dillon AP, MT June 2 - September 13 Dillon U Of Montana Western, MT June 5 - September 13

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