Frost Dates for Mankato, MN

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. April 30
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 9
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 4
First Fall Frost October 2

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze April 19
First Fall Hard Freeze October 20
44.15°N, -94.02°W © OpenStreetMap

Growing Season

162 Days April 30 to October 9

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

Learn more

Temperature

0° 30° 60° 90°
15°
High: 24°
Avg: 15°
Low: 6°
Jan
19°
High: 29°
Avg: 19°
Low: 9°
Feb
31°
High: 41°
Avg: 31°
Low: 22°
Mar
45°
High: 57°
Avg: 45°
Low: 34°
Apr
58°
High: 69°
Avg: 58°
Low: 47°
May
68°
High: 79°
Avg: 68°
Low: 58°
Jun
72°
High: 82°
Avg: 72°
Low: 62°
Jul
70°
High: 80°
Avg: 70°
Low: 59°
Aug
62°
High: 74°
Avg: 62°
Low: 50°
Sep
49°
High: 60°
Avg: 49°
Low: 37°
Oct
34°
High: 43°
Avg: 34°
Low: 25°
Nov
21°
High: 29°
Avg: 21°
Low: 13°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 3" 6" 8.4"
2.6"
2.56"
Jan
2.5"
2.47"
Feb
3.6"
3.62"
Mar
5.1"
5.06"
Apr
6.3"
6.29"
May
7.1"
7.14"
Jun
8.4"
8.45"
Jul
6.9"
6.89"
Aug
5.9"
5.86"
Sep
5.2"
5.24"
Oct
3.8"
3.79"
Nov
2.9"
2.89"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h12h13h15h15h15h14h12h11h9h9h
Jan: 7:29 AM – 4:31 PM · 9h 02m
Feb: 6:53 AM – 5:07 PM · 10h 14m
Mar: 6:11 AM – 5:49 PM · 11h 38m
Apr: 5:23 AM – 6:37 PM · 13h 14m
May: 4:43 AM – 7:17 PM · 14h 34m
Jun: 4:21 AM – 7:39 PM · 15h 18m
Jul: 4:30 AM – 7:30 PM · 15h 00m
Aug: 5:05 AM – 6:55 PM · 13h 50m
Sep: 5:51 AM – 6:09 PM · 12h 17m
Oct: 6:38 AM – 5:22 PM · 10h 44m
Nov: 7:19 AM – 4:41 PM · 9h 22m
Dec: 7:39 AM – 4:21 PM · 8h 42m
Daylight Longest: 15h 19m · Shortest: 8h 41m

Nearby Stations

St Peter, MNMay 2 - October 4 Amboy, MNApril 30 - October 7 New Ulm 3se, MNMay 2 - October 7 Waseca S Rsch & Outreach Ctr, MN May 2 - October 4 New Ulm 2 Se, MN April 29 - October 7 Winnebago, MN April 27 - October 10

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