Climate Insights for Pendleton

Skamania County, Oregon, United States

Hottest
July
30°C peak
Coldest
December
-2°C low
Wettest
December
79mm rain
Best to Visit
June, July, August
Mild temps & low rain

Climate Overview

The climate in Pendleton is temperate. The average annual temperature is 10°C and approximately 617mm of precipitation falls per year. December is the wettest month, receiving around 79mm of rainfall. Pendleton is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are December, January, February, when temperatures can drop to -2°C. Snowfall occurs from January to December, with around 83cm accumulating over the season.

Temperature

-10° 10° 20° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 5° Average: 1° Min: -2° Feb Max: 7° Average: 2° Min: -2° Mar Max: 11° Average: 5° Min: 0° Apr Max: 15° Average: 8° Min: 3° May Max: 20° Average: 13° Min: 7° Jun Max: 25° Average: 18° Min: 10° Jul Max: 30° Average: 22° Min: 14° Aug Max: 30° Average: 21° Min: 14° Sep Max: 24° Average: 16° Min: 9° Oct Max: 17° Average: 10° Min: 5° Nov Max: 9° Average: 4° Min: 1° Dec Max: 4° Average: 1° Min: -2°
Max
Average
Min

Temperatures in Pendleton vary considerably across the year, with a 32°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 30°C and the mean temperature sits around 22°C. The coldest month is December, when overnight lows fall to -2°C and the daily average is 1°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 6°C shift in average temperatures.

Precipitation

0mm 25mm 50mm 75mm 100mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 71mm Snow: 16mm Feb Precipitation: 72mm Snow: 22mm Mar Precipitation: 73mm Snow: 10mm Apr Precipitation: 65mm Snow: 6mm May Precipitation: 60mm Snow: 0mm Jun Precipitation: 31mm Snow: 0mm Jul Precipitation: 5mm Snow: 0mm Aug Precipitation: 9mm Snow: 0mm Sep Precipitation: 22mm Snow: 0mm Oct Precipitation: 54mm Snow: 0mm Nov Precipitation: 76mm Snow: 7mm Dec Precipitation: 79mm Snow: 21mm
Precipitation
Snow

Pendleton is a relatively dry area, receiving approximately 617mm of precipitation annually, which averages out to around 51mm per month. The wettest month is December, averaging 79mm of rainfall. November and March also tend to see above-average precipitation. The driest month is July, with just 5mm. That's 74mm less than December, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from January to December, with around 83cm accumulating over the season. February typically sees the most snow at around 22cm.

Wind

0km/h 5km/h 10km/h 15km/h 20km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 16km/h Feb Wind Speed: 17km/h Mar Wind Speed: 17km/h Apr Wind Speed: 18km/h May Wind Speed: 17km/h Jun Wind Speed: 17km/h Jul Wind Speed: 16km/h Aug Wind Speed: 16km/h Sep Wind Speed: 15km/h Oct Wind Speed: 16km/h Nov Wind Speed: 16km/h Dec Wind Speed: 15km/h
Wind Speed

Pendleton is mildly breezy, with an average annual wind speed of 16km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 15km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

51 days until Summer

It is currently spring in Pendleton, which began on March 20, 2026. Pendleton is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 30°C, while the coldest stretch bottoms out in December near -2°C. Summer is next, beginning on June 21, 2026 — 51 days from now.

Spring

Temperatures range from 0 to 20°C. Precipitation is moderate at around 197mm for the season, averaging 66mm per month. Winds are moderate at around 17km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.

Summer

Temperatures range from 10 to 30°C. Precipitation is minimal, with only around 45mm for the entire season. Winds are moderate at around 16km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 1 to 24°C. Precipitation is moderate at around 152mm for the season, averaging 51mm per month. Expect around 7cm of snow accumulation during this period. Winds are moderate at around 16km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.

Winter

Temperatures range from -2 to 7°C. Precipitation is moderate at around 222mm for the season, averaging 74mm per month. Expect around 59cm of snow accumulation during this period. Winds are moderate at around 16km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.

Best Time to Visit

Jan
Feb
Mar
Apr
May 13°
Jun 18°
Jul 22°
Aug 21°
Sep 16°
Oct 10°
Nov
Dec

The best time to visit Pendleton is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 17mm per month. By contrast, December can be quite cold with temperatures dropping to -2°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

Monthly Climate Data

The table below shows monthly climate averages for Pendleton based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
-2 °C
5 °C
16 km/h
71 mm
16 cm
Feb
-2 °C
7 °C
17 km/h
72 mm
22 cm
Mar
0 °C
11 °C
17 km/h
73 mm
10 cm
Apr
3 °C
15 °C
18 km/h
65 mm
6 cm
May Current
7 °C
20 °C
17 km/h
60 mm
0 cm
Jun
10 °C
25 °C
17 km/h
31 mm
0 cm
Jul
14 °C
30 °C
16 km/h
5 mm
0 cm
Aug
14 °C
30 °C
16 km/h
9 mm
0 cm
Sep
9 °C
24 °C
15 km/h
22 mm
0 cm
Oct
5 °C
17 °C
16 km/h
54 mm
0 cm
Nov
1 °C
9 °C
16 km/h
76 mm
7 cm
Dec
-2 °C
4 °C
15 km/h
79 mm
21 cm
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