Frost Dates for Council Bluffs, IA

Based on data from Omaha Eppley Airfield weather station, 4 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 18
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 21
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 April 23
First Fall Frost October 15

Hard Freeze (28°F)

Last Spring Hard Freeze April 8
First Fall Hard Freeze October 30
41.26°N, -95.86°W © OpenStreetMap

Growing Season

186 Days April 18 to October 21

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 6a

Avg. annual minimum: −10 to −5°F (−23 to −21°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° 30° 50° 70° 90°
24°
High: 34°F
Avg: 24°F
Low: 15°F
Jan
29°
High: 39°F
Avg: 29°F
Low: 19°F
Feb
41°
High: 52°F
Avg: 41°F
Low: 30°F
Mar
53°
High: 64°F
Avg: 53°F
Low: 41°F
Apr
64°
High: 75°F
Avg: 64°F
Low: 53°F
May
74°
High: 84°F
Avg: 74°F
Low: 63°F
Jun
78°
High: 88°F
Avg: 78°F
Low: 68°F
Jul
76°
High: 86°F
Avg: 76°F
Low: 66°F
Aug
68°
High: 79°F
Avg: 68°F
Low: 56°F
Sep
54°
High: 66°F
Avg: 54°F
Low: 43°F
Oct
40°
High: 50°F
Avg: 40°F
Low: 30°F
Nov
29°
High: 38°F
Avg: 29°F
Low: 20°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" 6.2"
1.6"
1.58"
Jan
1.6"
1.58"
Feb
2.8"
2.83"
Mar
3.9"
3.91"
Apr
5.2"
5.19"
May
5.9"
5.94"
Jun
5.5"
5.50"
Jul
6.2"
6.23"
Aug
5.2"
5.21"
Sep
4.4"
4.38"
Oct
2.6"
2.62"
Nov
2.0"
2.05"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9.5h10.5h11.5h13h14.5h15h14.5h13.5h12.5h11h9.5h9h
Jan: 7:20 AM – 4:40 PM · 9h 20m
Feb: 6:48 AM – 5:12 PM · 10h 24m
Mar: 6:10 AM – 5:50 PM · 11h 40m
Apr: 5:26 AM – 6:34 PM · 13h 07m
May: 4:50 AM – 7:10 PM · 14h 19m
Jun: 4:31 AM – 7:29 PM · 14h 58m
Jul: 4:39 AM – 7:21 PM · 14h 42m
Aug: 5:10 AM – 6:50 PM · 13h 40m
Sep: 5:52 AM – 6:08 PM · 12h 16m
Oct: 6:34 AM – 5:26 PM · 10h 52m
Nov: 7:11 AM – 4:49 PM · 9h 38m
Dec: 7:29 AM – 4:31 PM · 9h 02m
Daylight Longest: 14h 59m · Shortest: 9h 01m

Nearby Stations

Omaha #1, NEApril 16 - October 18 Ft Calhoun 4w, NE April 19 - October 17 Springfield 7e, NE April 17 - October 19 Gretna 4ne, NE April 21 - October 18 Blair, NEApril 22 - October 17 Glenwood 3sw, IA April 23 - October 11

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