Frost Dates for Theodore Roosevelt AP, ND

Elevation: 786 m

Frost Dates

Last Spring Frost (50%) May 18

First Fall Frost (50%) September 25

30% Probability

Last Spring Frost May 24

First Fall Frost September 20

Hard Freeze (28°F)

Last Spring Hard Freeze May 8

First Fall Hard Freeze October 3

46.80°N, 102.80°W © OpenStreetMap

Growing Season

130 Days May 18 to September 25

USDA Hardiness Zone

Zone 4b

Avg. annual minimum: −25 to −20°F

Learn more

Köppen Climate

Dwb Warm-Summer Continental (Dry Winter)

Warm, wet summers and cold, dry winters. Growing season is concentrated in summer months. Hardy crops and those suited to short seasons perform best.

Köppen climate map

Temperature

0° 30° 60° 90°

16°

Jan

20°

Feb

30°

Mar

42°

Apr

53°

May

63°

Jun

69°

Jul

69°

Aug

59°

Sep

44°

Oct

30°

Nov

20°

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	27°	16°	6°
February	30°	20°	9°
March	42°	30°	19°
April	55°	42°	28°
May	66°	53°	40°
June	76°	63°	49°
July	84°	69°	55°
August	84°	69°	53°
September	73°	59°	44°
October	56°	44°	31°
November	41°	30°	19°
December	30°	20°	10°

Precipitation

0" 1" 2" 3" 3.1"

0.9"

Jan

0.9"

Feb

1.5"

Mar

2.2"

Apr

3.0"

May

3.0"

Jun

3.1"

Jul

3.0"

Aug

2.8"

Sep

1.7"

Oct

1.1"

Nov

0.9"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	0.9
February	0.9
March	1.5
April	2.2
May	3.0
June	3.0
July	3.1
August	3.0
September	2.8
October	1.7
November	1.1
December	0.9

Sunrise / Sunset

Jan: 7:38 AM – 4:22 PM · 8h 44m

Feb: 6:58 AM – 5:02 PM · 10h 03m

Mar: 6:12 AM – 5:48 PM · 11h 36m

Apr: 5:19 AM – 6:41 PM · 13h 21m

May: 4:35 AM – 7:25 PM · 14h 50m

Jun: 4:11 AM – 7:49 PM · 15h 39m

Jul: 4:21 AM – 7:39 PM · 15h 19m

Aug: 4:59 AM – 7:01 PM · 14h 01m

Sep: 5:51 AM – 6:09 PM · 12h 19m

Oct: 6:42 AM – 5:18 PM · 10h 37m

Nov: 7:27 AM – 4:33 PM · 9h 06m

Dec: 7:49 AM – 4:11 PM · 8h 21m

Daylight Longest: 15h 40m · Shortest: 8h 20m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month	Sunrise	Sunset	Daylight
January	7:38 AM	4:22 PM	8h 44m
February	6:58 AM	5:02 PM	10h 03m
March	6:12 AM	5:48 PM	11h 36m
April	5:19 AM	6:41 PM	13h 21m
May	4:35 AM	7:25 PM	14h 50m
June	4:11 AM	7:49 PM	15h 39m
July	4:21 AM	7:39 PM	15h 19m
August	4:59 AM	7:01 PM	14h 01m
September	5:51 AM	6:09 PM	12h 19m
October	6:42 AM	5:18 PM	10h 37m
November	7:27 AM	4:33 PM	9h 06m
December	7:49 AM	4:11 PM	8h 21m

Nearby Stations

Dickinson, ND May 20 - September 22 New England, ND May 16 - September 24 Taylor 7 Nnw, ND May 23 - September 20 Richardton Abbey, ND May 9 - October 1 Dickinson Rch Hq, ND May 18 - September 24 Medora 7 E, ND May 9 - September 30

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