Frost Dates for Hillsboro, ND

Based on data from Hillsboro 3 N weather station, 2 miles away

Elevation: 906 ft

Frost Dates

Last Spring Frost (50%) May 2

First Fall Frost (50%) October 9

30% Probability

Last Spring Frost May 8

First Fall Frost October 3

Hard Freeze (28°F)

Last Spring Hard Freeze April 23

First Fall Hard Freeze October 20

47.40°N, 97.06°W © OpenStreetMap

Growing Season

160 Days May 2 to October 9

USDA Hardiness Zone

Zone 4b

Avg. annual minimum: −25 to −20°F

Learn more

Köppen Climate

Dfb Warm-Summer Continental

Warm summers and cold, snowy winters. A shorter growing season than hot-summer continental. Hardy vegetables, root crops, and cool-season greens do well. Season extension is valuable.

Köppen climate map

Temperature

0° 30° 60° 90°

9°

Jan

13°

Feb

28°

Mar

43°

Apr

57°

May

67°

Jun

71°

Jul

69°

Aug

61°

Sep

46°

Oct

30°

Nov

17°

Dec

32°F

28°F

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
January	18°	9°	1°
February	23°	13°	4°
March	36°	28°	20°
April	53°	43°	34°
May	68°	57°	46°
June	77°	67°	57°
July	81°	71°	61°
August	80°	69°	58°
September	71°	61°	50°
October	55°	46°	37°
November	38°	30°	22°
December	24°	17°	9°

Precipitation

0" 2" 4" 5.9"

1.7"

Jan

2.1"

Feb

4.1"

Mar

4.1"

Apr

4.1"

May

5.9"

Jun

5.9"

Jul

5.3"

Aug

4.3"

Sep

4.0"

Oct

2.6"

Nov

1.9"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	1.7
February	2.1
March	4.1
April	4.1
May	4.1
June	5.9
July	5.9
August	5.3
September	4.3
October	4.0
November	2.6
December	1.9

Sunrise / Sunset

Jan: 8:18 AM – 4:57 PM · 8h 39m

Feb: 7:42 AM – 5:43 PM · 10h 01m

Mar: 7:50 AM – 7:26 PM · 11h 35m

Apr: 6:47 AM – 8:10 PM · 13h 23m

May: 5:58 AM – 8:52 PM · 14h 54m

Jun: 5:36 AM – 9:20 PM · 15h 44m

Jul: 5:52 AM – 9:16 PM · 15h 23m

Aug: 6:30 AM – 8:34 PM · 14h 04m

Sep: 7:13 AM – 7:32 PM · 12h 19m

Oct: 7:56 AM – 6:31 PM · 10h 35m

Nov: 7:42 AM – 4:45 PM · 9h 02m

Dec: 8:16 AM – 4:32 PM · 8h 16m

Daylight Central Time (CT) Longest: 15h 46m · Shortest: 8h 15m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (Central Time (CT))
Month	Sunrise	Sunset	Daylight
January	8:18 AM	4:57 PM	8h 39m
February	7:42 AM	5:43 PM	10h 01m
March	7:50 AM	7:26 PM	11h 35m
April	6:47 AM	8:10 PM	13h 23m
May	5:58 AM	8:52 PM	14h 54m
June	5:36 AM	9:20 PM	15h 44m
July	5:52 AM	9:16 PM	15h 23m
August	6:30 AM	8:34 PM	14h 04m
September	7:13 AM	7:32 PM	12h 19m
October	7:56 AM	6:31 PM	10h 35m
November	7:42 AM	4:45 PM	9h 02m
December	8:16 AM	4:32 PM	8h 16m

Nearby Stations

Mayville, NDMay 13 - September 27 Ada, MNMay 11 - September 27 Georgetown 1 E, MN May 9 - October 1 Colgate, NDMay 10 - September 24 Grand Forks Univ (NWS), ND May 10 - October 1 Crookston Nw Exp Stn, MN May 11 - September 27

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