climigo

Oregon

When to go?

The best months are May–September. Avoid December (freezing).

Climate zones

CaliforniaNevadaIdahoWashingtonPortlandPortlandPortlandEugeneEugeneEugeneAstoriaAstoriaAstoriaBendBendBendSalemSalemSalem

Mean maximum and minimum temperature and mean monthly precipitation of the season (the mean of its three months), ERA5-Land 1996–2025, at about 9 km resolution: colours are in levels (the same as the city scale) and smaller details are not real.

What is the climate like?

Area mean indicative, over the whole territory

Temperature and rain

January 5°−4°
February 7°−4°
March 10°−2°
April 14°0°
May 18°4°
June 23°7°
July 28°10°
August 28°9°
September 24°5°
October 16°1°
November 9°−2°
December 5°−5° snow likely

Monthly min and max temperature (°C)

−10°−5°0°5°10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDec−4.2 · 5.3 °CJanuary: −4.2 · 5.3 °C−3.8 · 6.7 °CFebruary: −3.8 · 6.7 °C−2.1 · 10.1 °CMarch: −2.1 · 10.1 °C−0.1 · 13.7 °CApril: −0.1 · 13.7 °C3.5 · 18.3 °CMay: 3.5 · 18.3 °C6.6 · 22.7 °CJune: 6.6 · 22.7 °C9.9 · 28.4 °CJuly: 9.9 · 28.4 °C8.9 · 27.7 °CAugust: 8.9 · 27.7 °C5.3 · 23.5 °CSeptember: 5.3 · 23.5 °C1.1 · 16.4 °COctober: 1.1 · 16.4 °C−2.3 · 9.2 °CNovember: −2.3 · 9.2 °C−4.7 · 4.8 °CDecember: −4.7 · 4.8 °C

Monthly min and max temperature (°C)

Jan −4.2 – 5.3 °C
Feb −3.8 – 6.7 °C
Mar −2.1 – 10.1 °C
Apr −0.1 – 13.7 °C
May 3.5 – 18.3 °C
Jun 6.6 – 22.7 °C
Jul 9.9 – 28.4 °C
Aug 8.9 – 27.7 °C
Sep 5.3 – 23.5 °C
Oct 1.1 – 16.4 °C
Nov −2.3 – 9.2 °C
Dec −4.7 – 4.8 °C

How much it rains

January 106 mm12 d
February 80 mm10 d
March 80 mm11 d
April 60 mm9 d
May 52 mm7 d
June 32 mm4 d
July 8 mm1 d
August 11 mm2 d
September 24 mm3 d
October 55 mm7 d
November 98 mm11 d
December 131 mm13 d

Rain days and how much water

0102030 dJanFebMarAprMayJunJulAugSepOctNovDec106 mm · 12 rain days · 9 mm a dayJanuary: 106 mm · 12 rain days · 9 mm a day80 mm · 10 rain days · 8 mm a dayFebruary: 80 mm · 10 rain days · 8 mm a day80 mm · 11 rain days · 7 mm a dayMarch: 80 mm · 11 rain days · 7 mm a day60 mm · 9 rain days · 7 mm a dayApril: 60 mm · 9 rain days · 7 mm a day52 mm · 7 rain days · 7 mm a dayMay: 52 mm · 7 rain days · 7 mm a day32 mm · 4 rain days · 8 mm a dayJune: 32 mm · 4 rain days · 8 mm a day8 mm · 1 rain day · 8 mm a dayJuly: 8 mm · 1 rain day · 8 mm a day11 mm · 2 rain days · 6 mm a dayAugust: 11 mm · 2 rain days · 6 mm a day24 mm · 3 rain days · 8 mm a daySeptember: 24 mm · 3 rain days · 8 mm a day55 mm · 7 rain days · 8 mm a dayOctober: 55 mm · 7 rain days · 8 mm a day98 mm · 11 rain days · 9 mm a dayNovember: 98 mm · 11 rain days · 9 mm a day131 mm · 13 rain days · 10 mm a dayDecember: 131 mm · 13 rain days · 10 mm a day

Rain days and how much water

Jan 106 mm12 d
Feb 80 mm10 d
Mar 80 mm11 d
Apr 60 mm9 d
May 52 mm7 d
Jun 32 mm4 d
Jul 8 mm1 d
Aug 11 mm2 d
Sep 24 mm3 d
Oct 55 mm7 d
Nov 98 mm11 d
Dec 131 mm13 d

Bars: length = rain days, thickness = mm on a rain day, area = the month's rain. 3 mm a day7 mm a day15 mm a day

Colour = the month's rain: 103060100160250400mm

Daylight hours

January 9 h 17
February 10 h 30
March 11 h 53
April 13 h 25
May 14 h 43
June 15 h 26
July 15 h 08
August 14 h 01
September 12 h 32
October 11 h 04
November 9 h 41
December 8 h 57

Mean daylight hours over the whole territory.

Snow on the ground

January 23 cm
February 24 cm
March 20 cm
April 11 cm
May 3 cm
June –
July –
August –
September –
October –
November 3 cm
December 13 cm

Mean snow depth on the ground (cm)

01325 cmJanFebMarAprMayJunJulAugSepOctNovDec23 cmJanuary: 23 cm24 cmFebruary: 24 cm20 cmMarch: 20 cm11 cmApril: 11 cm3 cmMay: 3 cm0 cmJune: 0 cm0 cmJuly: 0 cm0 cmAugust: 0 cm0 cmSeptember: 0 cm0 cmOctober: 0 cm3 cmNovember: 3 cm13 cmDecember: 13 cm

Mean snow depth on the ground (cm)

Jan 23 cm
Feb 24 cm
Mar 20 cm
Apr 11 cm
May 3 cm
Jun 0 cm
Jul 0 cm
Aug 0 cm
Sep 0 cm
Oct 0 cm
Nov 3 cm
Dec 13 cm

Spatial mean over the whole area, weighted by area (cosine of the latitude), not by population: indicative only, since the climate varies a lot within an area (coasts, plains, mountains). Look at the cities for the weather you will find.

Main cities

Portland

Eugene

Astoria

Cities