Climate Insights for Ferndale

Whatcom County, Washington, United States

Hottest
August
21°C peak
Coldest
February
3°C low
Wettest
November
247mm rain
Best to Visit
July, August, September
Mild temps & low rain

Climate Overview

The climate in Ferndale is temperate. The average annual temperature is 10°C and approximately 1604mm of precipitation falls per year. November is the wettest month, receiving around 247mm of rainfall. Ferndale is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are February, December, January, when temperatures can drop to 3°C. Snowfall occurs from January to December, with around 62cm accumulating over the season.

Temperature

10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 7° Average: 5° Min: 4° Feb Max: 7° Average: 4° Min: 3° Mar Max: 10° Average: 7° Min: 4° Apr Max: 12° Average: 9° Min: 7° May Max: 15° Average: 12° Min: 10° Jun Max: 17° Average: 15° Min: 12° Jul Max: 20° Average: 17° Min: 15° Aug Max: 21° Average: 18° Min: 15° Sep Max: 18° Average: 15° Min: 13° Oct Max: 14° Average: 11° Min: 9° Nov Max: 10° Average: 8° Min: 6° Dec Max: 7° Average: 5° Min: 3°
Max
Average
Min

Ferndale sees moderate temperature variation throughout the year, ranging from 3°C to 21°C. August is the warmest month, though highs remain moderate at 21°C with a mean of 18°C. February is the coolest month, with minimum temperatures around 3°C and an average of 4°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between September and October, with a 4°C shift in average temperatures.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 209mm Snow: 11mm Feb Precipitation: 167mm Snow: 24mm Mar Precipitation: 164mm Snow: 6mm Apr Precipitation: 129mm Snow: 0mm May Precipitation: 74mm Snow: 0mm Jun Precipitation: 62mm Snow: 0mm Jul Precipitation: 21mm Snow: 0mm Aug Precipitation: 31mm Snow: 0mm Sep Precipitation: 89mm Snow: 0mm Oct Precipitation: 181mm Snow: 0mm Nov Precipitation: 247mm Snow: 4mm Dec Precipitation: 231mm Snow: 17mm
Precipitation
Snow

Ferndale is a fairly wet location, receiving approximately 1604mm of precipitation annually, which averages out to around 134mm per month. The wettest month is November, averaging 247mm of rainfall. December and January also tend to see above-average precipitation. The driest month is July, with just 21mm. That's 225mm less than November, 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 62cm accumulating over the season. February typically sees the most snow at around 24cm.

Wind

0km/h 5km/h 10km/h 15km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 11km/h Feb Wind Speed: 11km/h Mar Wind Speed: 10km/h Apr Wind Speed: 9km/h May Wind Speed: 8km/h Jun Wind Speed: 9km/h Jul Wind Speed: 8km/h Aug Wind Speed: 8km/h Sep Wind Speed: 8km/h Oct Wind Speed: 10km/h Nov Wind Speed: 11km/h Dec Wind Speed: 12km/h
Wind Speed

Ferndale is relatively calm, with an average annual wind speed of 10km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 11km/h in winter, 9km/h in spring, 8km/h in summer, 10km/h in autumn.

Seasons

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

7 days until Autumn

It is currently summer in Ferndale, which began on June 21, 2026. Ferndale 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 August at around 21°C, while the coldest stretch bottoms out in February near 3°C. Autumn is next, beginning on September 23, 2026 (7 days from now).

Spring

Temperatures range from 4 to 15°C. Rainfall is heavy, totalling around 366mm across the season with a monthly average of 122mm. Winds are generally light, averaging 9km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 12 to 21°C. Rainfall is relatively light, with around 114mm over the season and a monthly average of 38mm. Winds are generally light, averaging 8km/h. Comfortable clothing with a light layer for cooler evenings is all you need.

Autumn

Temperatures range from 6 to 18°C. Rainfall is heavy, totalling around 517mm across the season with a monthly average of 172mm. Winds are generally light, averaging 10km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 3 to 7°C. Rainfall is heavy, totalling around 606mm across the season with a monthly average of 202mm. Expect around 53cm of snow accumulation during this period. Winds are generally light, averaging 11km/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 12°
Jun 15°
Jul 17°
Aug 18°
Sep 15°
Oct 11°
Nov
Dec

The best time to visit Ferndale is during July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 47mm per month. By contrast, February can be quite cold with temperatures dropping to 3°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

Monthly Climate Data

The table below shows monthly climate averages for Ferndale 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
4 °C
7 °C
11 km/h
209 mm
11 cm
Feb
3 °C
7 °C
11 km/h
167 mm
24 cm
Mar
4 °C
10 °C
10 km/h
164 mm
6 cm
Apr
7 °C
12 °C
9 km/h
129 mm
0 cm
May
10 °C
15 °C
8 km/h
74 mm
0 cm
Jun
12 °C
17 °C
9 km/h
62 mm
0 cm
Jul
15 °C
20 °C
8 km/h
21 mm
0 cm
Aug
15 °C
21 °C
8 km/h
31 mm
0 cm
Sep Current
13 °C
18 °C
8 km/h
89 mm
0 cm
Oct
9 °C
14 °C
10 km/h
181 mm
0 cm
Nov
6 °C
10 °C
11 km/h
247 mm
4 cm
Dec
3 °C
7 °C
12 km/h
231 mm
17 cm
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