February Weather in Issaquah, United States

Last updated: June 24, 2025

In February, the average temperature in Issaquah, United States hovers around 4°C (39°F), with extremes ranging from a chilly -12°C (10°F) to a mild 15°C (60°F). During this month, expect 234 mm (9.2 in) of precipitation spread over 20 days, contributing to an average humidity of 86%. Be prepared for a mix of crisp air and damp conditions!

February Temperature in Issaquah

In February in Issaquah, the average temperature is 4°C (39°F), with maximums reaching 15°C (60°F) and minimums dropping as low as -12°C (10°F). Travelers should be prepared for a wide range of temperatures and dress in layers to accommodate changing conditions.

February Weather in Issaquah: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in Issaquah, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Issaquah, February typically has an average temperature of 4°C (39°F), with highs reaching up to 15°C (60°F) and lows dropping to around -12°C (10°F).

Data source: Temperature data for Issaquah generated using information from the Copernicus Climate Change Service.

February Precipitation in Issaquah

In Issaquah in February, the precipitation amount is 234 mm (9.2 in) over the course of 20 days.

February Precipitation Trends in Issaquah

The chart displays monthly precipitation patterns in Issaquah, with values for each month alongside February’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how February’s conditions compare to those of other months. In Issaquah, February typically receives around 234 mm (9.2 inches) of precipitation spread over approximately 20 days.

Data source: Precipitation data for February generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

February Humidity in Issaquah

In Issaquah in February humidity is 86%. With an average temperature of 4°C (39°F), this humidity feels like a chilly mist enveloping you, making it essential to bundle up while exploring, as each breath comes with a damp chill that can be quite refreshing yet starkly invigorating for travelers.

February Average Humidity in Issaquah

This chart illustrates the average monthly humidity levels in Issaquah, with February’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In February, average humidity in Issaquah is approximately 86%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for February generated using information from the Copernicus Climate Change Service.

February UV Index in Issaquah

In Issaquah in February, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Issaquah, you can check the information here.

Maximum UV Index Levels in Issaquah for February

The chart shows the monthly maximum UV Index (UVI) for Issaquah in February, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In February, the maximum UV index in Issaquah typically reaches 3, which falls under the moderate exposure category.

Data source: Issaquah February UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How February Weather in Issaquah Compares to Other Months

Weather in Issaquah varies notably across the year, with each month offering distinct climate conditions. This page compares February’s weather to other months in Issaquah, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Issaquah, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (40°F)	199 mm (7.9 inches)	86%	low
February Weather	4°C (39°F)	234 mm (9.2 inches)	86%	moderate
March Weather	7°C (44°F)	152 mm (6.0 inches)	87%	moderate
April Weather	9°C (49°F)	144 mm (5.7 inches)	84%	high
May Weather	13°C (55°F)	85 mm (3.3 inches)	81%	very high
June Weather	16°C (60°F)	78 mm (3.1 inches)	82%	very high
July Weather	18°C (65°F)	28 mm (1.1 inches)	79%	very high
August Weather	18°C (65°F)	23 mm (0.9 inches)	63%	very high
September Weather	15°C (60°F)	115 mm (4.5 inches)	62%	high
October Weather	10°C (50°F)	204 mm (8.1 inches)	83%	moderate
November Weather	7°C (45°F)	217 mm (8.5 inches)	89%	low
December Weather	4°C (40°F)	235 mm (9.3 inches)	88%	low