Frost Dates for Griggsville, IL

Based on data from Pittsfield #2 weather station, 7 miles away

Elevation: 705 ft

Frost Dates

Last Spring Frost (50%) April 14

First Fall Frost (50%) October 21

30% Probability

Last Spring Frost April 21

First Fall Frost October 15

Hard Freeze (28°F)

Last Spring Hard Freeze April 4

First Fall Hard Freeze November 1

39.71°N, 90.72°W © OpenStreetMap

Growing Season

190 Days April 14 to October 21

USDA Hardiness Zone

Zone 6a

Avg. annual minimum: −10 to −5°F

Learn more

Köppen Climate

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°

28°

Jan

32°

Feb

42°

Mar

54°

Apr

65°

May

74°

Jun

77°

Jul

75°

Aug

67°

Sep

56°

Oct

44°

Nov

33°

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	37°	28°	19°
February	42°	32°	22°
March	53°	42°	32°
April	66°	54°	42°
May	75°	65°	54°
June	84°	74°	63°
July	88°	77°	66°
August	87°	75°	64°
September	80°	67°	55°
October	68°	56°	44°
November	54°	44°	33°
December	42°	33°	24°

Precipitation

0" 3" 6" 8.5"

4.3"

Jan

5.1"

Feb

6.7"

Mar

6.4"

Apr

6.5"

May

7.4"

Jun

8.5"

Jul

7.2"

Aug

6.0"

Sep

5.5"

Oct

6.0"

Nov

5.2"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	4.3
February	5.1
March	6.7
April	6.4
May	6.5
June	7.4
July	8.5
August	7.2
September	6.0
October	5.5
November	6.0
December	5.2

Sunrise / Sunset

Jan: 7:28 AM – 4:57 PM · 9h 30m

Feb: 7:03 AM – 5:33 PM · 10h 30m

Mar: 7:22 AM – 7:04 PM · 11h 41m

Apr: 6:32 AM – 7:35 PM · 13h 03m

May: 5:54 AM – 8:05 PM · 14h 11m

Jun: 5:40 AM – 8:27 PM · 14h 47m

Jul: 5:53 AM – 8:25 PM · 14h 32m

Aug: 6:21 AM – 7:54 PM · 13h 34m

Sep: 6:50 AM – 7:05 PM · 12h 15m

Oct: 7:21 AM – 6:16 PM · 10h 56m

Nov: 6:55 AM – 4:42 PM · 9h 46m

Dec: 7:23 AM – 4:35 PM · 9h 13m

Daylight Central Time (CT) Longest: 14h 48m · Shortest: 9h 12m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (Central Time (CT))
Month	Sunrise	Sunset	Daylight
January	7:28 AM	4:57 PM	9h 30m
February	7:03 AM	5:33 PM	10h 30m
March	7:22 AM	7:04 PM	11h 41m
April	6:32 AM	7:35 PM	13h 03m
May	5:54 AM	8:05 PM	14h 11m
June	5:40 AM	8:27 PM	14h 47m
July	5:53 AM	8:25 PM	14h 32m
August	6:21 AM	7:54 PM	13h 34m
September	6:50 AM	7:05 PM	12h 15m
October	7:21 AM	6:16 PM	10h 56m
November	6:55 AM	4:42 PM	9h 46m
December	7:23 AM	4:35 PM	9h 13m

Nearby Stations

Perry 6 Nw, IL April 18 - October 15 Clarksville L&D 24, MO April 4 - November 1 Winchester, IL April 18 - October 20 Saverton L&D 22, MO April 4 - November 4 White Hall 1 E, IL April 13 - October 22 Bowling Green 1 E, MO April 13 - October 23

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