Frost Dates for Vernonia #2, OR

Elevation: 191 m

Frost Dates

Last Spring Frost (50%) May 8

First Fall Frost (50%) October 1

30% Probability

Last Spring Frost May 17

First Fall Frost September 24

Hard Freeze (28°F)

Last Spring Hard Freeze April 12

First Fall Hard Freeze October 21

45.87°N, 123.19°W © OpenStreetMap

Growing Season

146 Days May 8 to October 1

USDA Hardiness Zone

Zone 8a

Avg. annual minimum: 10 to 15°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°

39°

Jan

40°

Feb

44°

Mar

47°

Apr

53°

May

57°

Jun

62°

Jul

63°

Aug

58°

Sep

50°

Oct

42°

Nov

38°

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°	39°	32°
February	49°	40°	31°
March	54°	44°	34°
April	59°	47°	36°
May	66°	53°	40°
June	70°	57°	44°
July	77°	62°	47°
August	78°	63°	47°
September	73°	58°	43°
October	61°	50°	38°
November	51°	42°	34°
December	44°	38°	31°

Precipitation

0" 3" 6" 8.1"

6.7"

Jan

5.4"

Feb

5.3"

Mar

3.9"

Apr

3.6"

May

2.8"

Jun

1.6"

Jul

1.8"

Aug

3.8"

Sep

5.0"

Oct

7.0"

Nov

8.1"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	6.7
February	5.4
March	5.3
April	3.9
May	3.6
June	2.8
July	1.6
August	1.8
September	3.8
October	5.0
November	7.0
December	8.1

Sunrise / Sunset

Jan: 7:57 AM – 4:47 PM · 8h 51m

Feb: 7:24 AM – 5:31 PM · 10h 07m

Mar: 7:34 AM – 7:11 PM · 11h 37m

Apr: 6:34 AM – 7:52 PM · 13h 19m

May: 5:47 AM – 8:31 PM · 14h 44m

Jun: 5:27 AM – 8:58 PM · 15h 31m

Jul: 5:42 AM – 8:54 PM · 15h 12m

Aug: 6:18 AM – 8:16 PM · 13h 57m

Sep: 6:58 AM – 7:16 PM · 12h 18m

Oct: 7:38 AM – 6:18 PM · 10h 40m

Nov: 7:22 AM – 4:34 PM · 9h 12m

Dec: 7:54 AM – 4:23 PM · 8h 29m

Daylight Pacific Time (PT) Longest: 15h 32m · Shortest: 8h 28m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (Pacific Time (PT))
Month	Sunrise	Sunset	Daylight
January	7:57 AM	4:47 PM	8h 51m
February	7:24 AM	5:31 PM	10h 07m
March	7:34 AM	7:11 PM	11h 37m
April	6:34 AM	7:52 PM	13h 19m
May	5:47 AM	8:31 PM	14h 44m
June	5:27 AM	8:58 PM	15h 31m
July	5:42 AM	8:54 PM	15h 12m
August	6:18 AM	8:16 PM	13h 57m
September	6:58 AM	7:16 PM	12h 18m
October	7:38 AM	6:18 PM	10h 40m
November	7:22 AM	4:34 PM	9h 12m
December	7:54 AM	4:23 PM	8h 29m

Nearby Stations

Saint Helens Rfd, OR April 18 - November 7 Clatskanie, OR April 24 - October 24 Scappoose Ind AP, OR April 10 - November 2 Longview, WAApril 8 - November 5 Forest Grove, OR April 16 - October 26 Portland-Hillsboro AP, OR April 16 - October 23

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