Frost Dates for Atwater, MN

Based on data from Litchfield weather station, 12 miles away

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 6
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. October 2
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 11
First Fall Frost September 26

Hard Freeze (28°F)

Last Spring Hard Freeze April 27
First Fall Hard Freeze October 10
45.14°N, -94.78°W © OpenStreetMap

Growing Season

149 Days May 6 to October 2

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 4b

Avg. annual minimum: −25 to −20°F (−32 to −29°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

Dfa Hot-Summer Continental

Hot summers and cold winters with year-round precipitation. Moderate growing season supports warm-season crops like tomatoes, peppers, and corn. Winter protection extends the harvest.

Köppen climate map

Temperature

-10° 20° 50° 80°
10°
High: 20°F
Avg: 10°F
Low: 0°F
Jan
14°
High: 25°F
Avg: 14°F
Low: 4°F
Feb
27°
High: 37°F
Avg: 27°F
Low: 17°F
Mar
43°
High: 53°F
Avg: 43°F
Low: 32°F
Apr
56°
High: 67°F
Avg: 56°F
Low: 45°F
May
66°
High: 77°F
Avg: 66°F
Low: 56°F
Jun
71°
High: 81°F
Avg: 71°F
Low: 60°F
Jul
68°
High: 79°F
Avg: 68°F
Low: 58°F
Aug
60°
High: 71°F
Avg: 60°F
Low: 48°F
Sep
45°
High: 56°F
Avg: 45°F
Low: 34°F
Oct
30°
High: 40°F
Avg: 30°F
Low: 21°F
Nov
17°
High: 26°F
Avg: 17°F
Low: 7°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 3" 6" 8.3"
2.4"
2.42"
Jan
2.9"
2.87"
Feb
4.3"
4.30"
Mar
5.5"
5.55"
Apr
6.5"
6.53"
May
8.3"
8.31"
Jun
7.5"
7.55"
Jul
7.7"
7.66"
Aug
7.1"
7.12"
Sep
4.5"
4.52"
Oct
3.3"
3.32"
Nov
3.5"
3.50"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13.5h14.5h15.5h15h14h12.5h10.5h9.5h8.5h
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: 4:17 AM – 7:43 PM · 15h 25m
Jul: 4:27 AM – 7:33 PM · 15h 07m
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 27m · Shortest: 8h 33m

Nearby Stations

Dassel 3se, MN April 30 - October 10 Hutchinson 1 N, MN April 28 - October 8 Kimball 3n, MNMay 2 - October 5 New London, MNMay 4 - October 4 Willmar Wwtp, MN April 30 - October 7 Willmar 5n, MNMay 1 - October 6

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