Frost Dates for Altamont, OR

Based on data from Klamath Falls Intl AP weather station, 4 miles away

Elevation: 4144 ft

Frost Dates

Last Spring Frost (50%) June 9

First Fall Frost (50%) September 18

30% Probability

Last Spring Frost June 16

First Fall Frost September 13

Hard Freeze (28°F)

Last Spring Hard Freeze May 21

First Fall Hard Freeze October 2

42.21°N, 121.74°W © OpenStreetMap

Growing Season

101 Days June 9 to September 18

USDA Hardiness Zone

Zone 6b

Avg. annual minimum: −5 to 0°F

Learn more

Köppen Climate

BSk Cold Semi-Arid (Steppe)

Cool to cold with low rainfall and wide temperature swings. Common in the western Great Plains and central Asia. Short growing seasons benefit from season extension techniques.

Köppen climate map

Temperature

20° 40° 60° 80°

32°

Jan

35°

Feb

39°

Mar

43°

Apr

52°

May

59°

Jun

67°

Jul

66°

Aug

58°

Sep

48°

Oct

37°

Nov

30°

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	42°	32°	22°
February	46°	35°	24°
March	52°	39°	27°
April	58°	43°	29°
May	67°	52°	36°
June	76°	59°	41°
July	86°	67°	48°
August	85°	66°	47°
September	78°	58°	39°
October	64°	48°	31°
November	49°	37°	25°
December	40°	30°	21°

Precipitation

0" 1" 2" 2.6"

2.0"

Jan

1.8"

Feb

1.7"

Mar

1.8"

Apr

1.9"

May

1.8"

Jun

0.1"

Jul

0.0"

Aug

0.7"

Sep

2.6"

Oct

2.2"

Nov

1.9"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	2.0
February	1.8
March	1.7
April	1.8
May	1.9
June	1.8
July	0.1
August	0.0
September	0.7
October	2.6
November	2.2
December	1.9

Sunrise / Sunset

Jan: 7:39 AM – 4:54 PM · 9h 15m

Feb: 7:11 AM – 5:32 PM · 10h 21m

Mar: 7:27 AM – 7:06 PM · 11h 40m

Apr: 6:33 AM – 7:42 PM · 13h 09m

May: 5:51 AM – 8:15 PM · 14h 23m

Jun: 5:35 AM – 8:39 PM · 15h 04m

Jul: 5:49 AM – 8:36 PM · 14h 47m

Aug: 6:20 AM – 8:02 PM · 13h 43m

Sep: 6:53 AM – 7:09 PM · 12h 16m

Oct: 7:27 AM – 6:17 PM · 10h 50m

Nov: 7:05 AM – 4:39 PM · 9h 33m

Dec: 7:35 AM – 4:31 PM · 8h 56m

Daylight Pacific Time (PT) Longest: 15h 05m · Shortest: 8h 55m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (Pacific Time (PT))
Month	Sunrise	Sunset	Daylight
January	7:39 AM	4:54 PM	9h 15m
February	7:11 AM	5:32 PM	10h 21m
March	7:27 AM	7:06 PM	11h 40m
April	6:33 AM	7:42 PM	13h 09m
May	5:51 AM	8:15 PM	14h 23m
June	5:35 AM	8:39 PM	15h 04m
July	5:49 AM	8:36 PM	14h 47m
August	6:20 AM	8:02 PM	13h 43m
September	6:53 AM	7:09 PM	12h 16m
October	7:27 AM	6:17 PM	10h 50m
November	7:05 AM	4:39 PM	9h 33m
December	7:35 AM	4:31 PM	8h 56m

Nearby Stations

Keno, ORJune 5 - September 20 Tulelake, CAJune 6 - September 14 Gerber Dam, OR May 31 - September 21 Lava Beds Nat Mon, CA June 6 - September 28 Copco #1 Dam, CA May 4 - October 21 Howard Prairie Dam, OR June 8 - September 24

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