Frost Dates for Lake City, IA

Based on data from Rockwell City weather station, 10 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. April 26
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 10
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 1
First Fall Frost October 4

Hard Freeze (28°F)

Last Spring Hard Freeze April 16
First Fall Hard Freeze October 21
42.27°N, -94.73°W © OpenStreetMap

Growing Season

167 Days April 26 to October 10

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

Avg. annual minimum: −20 to −15°F (−29 to −26°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

0° 30° 60° 90°
18°
High: 27°F
Avg: 18°F
Low: 8°F
Jan
22°
High: 31°F
Avg: 22°F
Low: 12°F
Feb
35°
High: 45°F
Avg: 35°F
Low: 24°F
Mar
47°
High: 59°F
Avg: 47°F
Low: 36°F
Apr
59°
High: 70°F
Avg: 59°F
Low: 49°F
May
70°
High: 80°F
Avg: 70°F
Low: 60°F
Jun
73°
High: 83°F
Avg: 73°F
Low: 63°F
Jul
71°
High: 81°F
Avg: 71°F
Low: 61°F
Aug
63°
High: 75°F
Avg: 63°F
Low: 51°F
Sep
50°
High: 62°F
Avg: 50°F
Low: 38°F
Oct
36°
High: 46°F
Avg: 36°F
Low: 25°F
Nov
23°
High: 32°F
Avg: 23°F
Low: 15°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 6" 7.2"
2.7"
2.70"
Jan
3.0"
2.99"
Feb
4.6"
4.61"
Mar
6.5"
6.50"
Apr
7.2"
7.19"
May
7.2"
7.15"
Jun
6.9"
6.90"
Jul
6.9"
6.88"
Aug
6.4"
6.37"
Sep
4.7"
4.68"
Oct
4.4"
4.36"
Nov
3.3"
3.30"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10.5h11.5h13h14.5h15h15h13.5h12.5h11h9.5h9h
Jan: 7:23 AM – 4:37 PM · 9h 13m
Feb: 6:50 AM – 5:10 PM · 10h 20m
Mar: 6:10 AM – 5:50 PM · 11h 39m
Apr: 5:25 AM – 6:35 PM · 13h 10m
May: 4:48 AM – 7:12 PM · 14h 25m
Jun: 4:27 AM – 7:33 PM · 15h 05m
Jul: 4:36 AM – 7:24 PM · 14h 49m
Aug: 5:08 AM – 6:52 PM · 13h 44m
Sep: 5:52 AM – 6:08 PM · 12h 16m
Oct: 6:36 AM – 5:24 PM · 10h 49m
Nov: 7:14 AM – 4:46 PM · 9h 32m
Dec: 7:33 AM – 4:27 PM · 8h 54m
Daylight Longest: 15h 07m · Shortest: 8h 53m

Nearby Stations

Sac City, IAApril 30 - October 6 Pocahontas, IA April 26 - October 7 Ft Dodge 5nnw, IA April 28 - October 8 Carroll, IAApril 27 - October 10 Jefferson, IAApril 26 - October 9 Humboldt Wtp, IA April 27 - October 9

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