Frost Dates for Grand Mound, WA

Based on data from Centralia weather station, 5 miles away

Elevation: 167 ft

Frost Dates

Last Spring Frost (50%) April 22

First Fall Frost (50%) October 27

30% Probability

Last Spring Frost April 30

First Fall Frost October 19

Hard Freeze (28°F)

Last Spring Hard Freeze March 23

First Fall Hard Freeze November 13

46.79°N, 123.01°W © OpenStreetMap

Growing Season

188 Days April 22 to October 27

USDA Hardiness Zone

Zone 8b

Avg. annual minimum: 15 to 20°F

Learn more

Köppen Climate

Csb Warm-Summer Mediterranean

Warm, dry summers and mild, wet winters. Similar to hot-summer Mediterranean but cooler. Great for a wide range of vegetables and fruit trees with moderate water needs.

Köppen climate map

Temperature

30° 50° 70°

40°

Jan

42°

Feb

45°

Mar

49°

Apr

56°

May

60°

Jun

65°

Jul

66°

Aug

61°

Sep

52°

Oct

44°

Nov

40°

Dec

32°F

Avg High Avg Temp Avg Low Light Frost (32°F)

Temperature table

Average monthly temperatures (°F)
Month	Avg High	Avg Temp	Avg Low
January	46°	40°	34°
February	50°	42°	34°
March	54°	45°	36°
April	60°	49°	39°
May	67°	56°	44°
June	71°	60°	49°
July	78°	65°	53°
August	78°	66°	53°
September	73°	61°	48°
October	61°	52°	43°
November	51°	44°	37°
December	45°	40°	34°

Precipitation

0" 2" 4" 5.0"

4.6"

Jan

3.8"

Feb

4.3"

Mar

3.8"

Apr

3.9"

May

2.9"

Jun

2.0"

Jul

1.9"

Aug

2.2"

Sep

3.8"

Oct

5.0"

Nov

5.0"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	4.6
February	3.8
March	4.3
April	3.8
May	3.9
June	2.9
July	2.0
August	1.9
September	2.2
October	3.8
November	5.0
December	5.0

Sunrise / Sunset

Jan: 7:59 AM – 4:43 PM · 8h 45m

Feb: 7:24 AM – 5:28 PM · 10h 04m

Mar: 7:33 AM – 7:09 PM · 11h 36m

Apr: 6:31 AM – 7:53 PM · 13h 21m

May: 5:43 AM – 8:33 PM · 14h 49m

Jun: 5:23 AM – 9:01 PM · 15h 38m

Jul: 5:38 AM – 8:56 PM · 15h 18m

Aug: 6:16 AM – 8:16 PM · 14h 01m

Sep: 6:57 AM – 7:16 PM · 12h 19m

Oct: 7:38 AM – 6:16 PM · 10h 37m

Nov: 7:23 AM – 4:30 PM · 9h 07m

Dec: 7:57 AM – 4:19 PM · 8h 22m

Daylight Pacific Time (PT) Longest: 15h 39m · Shortest: 8h 21m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (Pacific Time (PT))
Month	Sunrise	Sunset	Daylight
January	7:59 AM	4:43 PM	8h 45m
February	7:24 AM	5:28 PM	10h 04m
March	7:33 AM	7:09 PM	11h 36m
April	6:31 AM	7:53 PM	13h 21m
May	5:43 AM	8:33 PM	14h 49m
June	5:23 AM	9:01 PM	15h 38m
July	5:38 AM	8:56 PM	15h 18m
August	6:16 AM	8:16 PM	14h 01m
September	6:57 AM	7:16 PM	12h 19m
October	7:38 AM	6:16 PM	10h 37m
November	7:23 AM	4:30 PM	9h 07m
December	7:57 AM	4:19 PM	8h 22m

Nearby Stations

Toledo Faa AP, WA April 5 - October 25 Olympia AP, WA April 29 - October 14 Mayfield Pwr Plt, WA April 7 - November 13 Elma, WAMay 1 - October 14 Matlock 8 S, WA April 23 - October 20 Shelton Sanderson Fld, WA April 27 - October 16

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