Frost Dates for Broken Bow, NE

Based on data from Broken Bow 2 W weather station, 2 miles away

Elevation: 2477 ft

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. May 10
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. October 1

30% Probability

Only 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 16
First Fall Frost September 26

Hard Freeze (28°F)

Last Spring Hard Freeze May 2
First Fall Hard Freeze October 9
41.40°N, 99.64°W © OpenStreetMap

Growing Season

144 Days May 10 to October 1

USDA Hardiness Zone

Hardiness 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

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dwa Hot-Summer Continental (Dry Winter)

Hot, wet summers and cold, dry winters. Monsoon influence brings most rain in summer. Good for warm-season crops during the rainy season; winters are harsh but dry.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January37°24°12°
February40°27°14°
March51°37°23°
April60°46°32°
May70°57°44°
June81°68°55°
July86°73°60°
August84°71°58°
September77°62°48°
October64°49°34°
November50°36°22°
December39°26°13°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January1.6
February1.5
March2.0
April3.5
May5.3
June5.8
July6.1
August4.9
September4.5
October4.0
November2.4
December1.7

Sunrise / Sunset

Daylight Central Time (CT) Longest: 14h 60m · Shortest: 9h 00m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Central Time (CT))
Month Sunrise Sunset Daylight
January8:08 AM5:28 PM9h 19m
February7:41 AM6:05 PM10h 24m
March7:58 AM7:38 PM11h 40m
April7:05 AM8:13 PM13h 07m
May6:25 AM8:45 PM14h 20m
June6:10 AM9:08 PM14h 59m
July6:23 AM9:06 PM14h 43m
August6:53 AM8:33 PM13h 40m
September7:25 AM7:41 PM12h 16m
October7:58 AM6:50 PM10h 51m
November7:35 AM5:13 PM9h 37m
December8:04 AM5:05 PM9h 01m

Nearby Stations

Broken Bow Muni AP, NE May 1 - October 7 Anselmo 2 Wsw, NE May 10 - October 1 Oconto, NEMay 10 - October 1 Callaway 8wsw, NE May 3 - October 6 Mason City, NEMay 3 - October 5 Comstock, NEMay 4 - October 4

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