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Compare the Climate and Weather in Bellevue and Seattle

This page lets you compare and contrast the weather and climate in Bellevue and Seattle year round.

You can drill down to a specific season, month, and even day by clicking the graphs or using the navigation panel.

You can compare up to 6 locations. Add more locations using the search box below or by clicking the map.

Bellevue
Washington, United States
Seattle
Washington, United States
Map

Average High and Low Temperature

Compare the Average High and Low Temperature in Bellevue and SeattleJanFebMarAprMayJunJulAugSepOctNovDec30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F5937794633NowNowBellevueBellevueSeattleSeattle
The daily average high and low air temperature at 2 meters above the ground. The thin dotted lines are the corresponding perceived temperatures.
HighJanFebMarAprMayJunJulAugSepOctNovDec
Bellevue 47°F50°F55°F60°F66°F71°F77°F77°F71°F61°F51°F46°F
Seattle 48°F51°F55°F60°F66°F72°F77°F77°F71°F61°F52°F47°F
LowJanFebMarAprMayJunJulAugSepOctNovDec
Bellevue 38°F39°F41°F45°F50°F55°F58°F58°F54°F48°F42°F37°F
Seattle 38°F39°F42°F45°F50°F55°F58°F58°F54°F48°F42°F38°F

Bellevue

Average Hourly Temperature in BellevueJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldvery coldcoldcoldcomfortablewarm

Seattle

Average Hourly Temperature in SeattleJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldvery coldcoldcoldcomfortablewarm
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Chance of Clearer Skies

Compare the Chance of Clearer Skies in Bellevue and SeattleJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%7426NowNowBellevueBellevueSeattleSeattle
The percentage of time the sky is clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).
Clearer SkiesJanFebMarAprMayJunJulAugSepOctNovDec
Bellevue 27%30%32%37%44%51%69%69%61%43%29%27%
Seattle 29%31%33%39%45%53%70%70%61%45%31%29%

Daily Chance of Precipitation

Compare the Daily Chance of Precipitation in Bellevue and SeattleJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%599NowNowBellevueBellevueSeattleSeattle
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip.JanFebMarAprMayJunJulAugSepOctNovDec
Bellevue 15.5d13.5d15.4d12.3d9.8d7.6d3.9d3.7d6.6d12.4d17.2d16.4d
Seattle 14.8d13.1d14.8d11.6d9.2d7.2d3.6d3.5d6.3d12.0d16.7d15.8d

Average Monthly Rainfall

Compare the Average Monthly Rainfall in Bellevue and SeattleJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in8.30.77.7BellevueBellevueSeattleSeattle
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
RainfallJanFebMarAprMayJunJulAugSepOctNovDec
Bellevue 6.6″5.6″4.9″3.5″2.4″1.8″0.8″0.9″2.0″4.8″8.2″7.1″
Seattle 6.0″5.2″4.5″3.1″2.2″1.6″0.7″0.9″1.8″4.4″7.5″6.6″

Average Monthly Snowfall

Compare the Average Monthly Snowfall in Bellevue and SeattleJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.11.8NowNowBellevueBellevueSeattleSeattle
The average snowfall accumulated over the course of a sliding 31-day period centered on the day in question.
SnowfallJanFebMarAprMayJunJulAugSepOctNovDec
Bellevue 1.5″0.4″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.2″1.4″
Seattle 1.2″0.3″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.2″1.2″

Hours of Daylight

Compare the Hours of Daylight in Bellevue and SeattleJanFebMarAprMayJunJulAugSepOctNovDec4 hr4 hr6 hr6 hr8 hr8 hr10 hr10 hr12 hr12 hr14 hr14 hr16 hr16 hr18 hr18 hr20 hr20 hr16.08.4NowNowBellevueBellevueSeattleSeattle
The number of hours during which the Sun is at least partly above the horizon.
DaylightJanFebMarAprMayJunJulAugSepOctNovDec
Bellevue 9.0h10.3h12.0h13.7h15.2h15.9h15.5h14.1h12.5h10.8h9.3h8.5h
Seattle 9.0h10.3h12.0h13.7h15.2h15.9h15.5h14.1h12.5h10.8h9.3h8.5h

Chance of Muggy Conditions

Compare the Chance of Muggy Conditions in Bellevue and SeattleJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%NowNow
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy daysJanFebMarAprMayJunJulAugSepOctNovDec
Bellevue 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d
Seattle 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d

Average Wind Speed

Compare the Average Wind Speed in Bellevue and SeattleJanFebMarAprMayJunJulAugSepOctNovDec0.0 mph0.0 mph0.5 mph0.5 mph1.0 mph1.0 mph1.5 mph1.5 mph2.0 mph2.0 mph2.5 mph2.5 mph3.0 mph3.0 mph3.5 mph3.5 mph4.0 mph4.0 mph4.5 mph4.5 mph5.0 mph5.0 mph5.5 mph5.5 mph5.32.7NowNowBellevueBellevueSeattleSeattle
The average of mean hourly wind speeds at 10 meters above the ground.
Wind Speed (mph)JanFebMarAprMayJunJulAugSepOctNovDec
Bellevue 5.04.84.54.03.43.12.82.83.24.05.05.1
Seattle 5.04.94.74.23.53.22.92.93.34.15.15.1

Average Water Temperature

Compare the Average Water Temperature in Bellevue and SeattleJanFebMarAprMayJunJulAugSepOctNovDec46°F46°F48°F48°F50°F50°F52°F52°F54°F54°F56°F56°F58°F58°F5646NowNowBellevueBellevueSeattleSeattle
The daily average wide-area surface water temperature.
Water Temp.JanFebMarAprMayJunJulAugSepOctNovDec
Bellevue 47°F46°F47°F49°F52°F54°F55°F56°F55°F53°F50°F48°F
Seattle 47°F46°F47°F49°F52°F54°F56°F56°F55°F53°F50°F48°F

Tourism Score

Compare the Tourism Score in Bellevue and SeattleJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.30.1NowNowBellevueBellevueSeattleSeattle
The tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.

Beach/Pool Score

Compare the Beach/Pool Score in Bellevue and SeattleJanFebMarAprMayJunJulAugSepOctNovDec002244668810102.2NowNowBellevueBellevueSeattleSeattle
The beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Growing Season

Compare the Growing Season in Bellevue and SeattleJanFebMarAprMayJunJulAugSepOctNovDec0%0%20%20%40%40%60%60%80%80%100%100%NowNowBellevueBellevueSeattleSeattle
The percentage chance that a given day is within the growing season, defined as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Growing Degree Days

Compare the Growing Degree Days in Bellevue and SeattleJanFebMarAprMayJunJulAugSepOctNovDec500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°FNowNowBellevueBellevueSeattleSeattle
The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature (50°F in this case).

Average Daily Incident Shortwave Solar Energy

Compare the Average Daily Incident Shortwave Solar Energy in Bellevue and SeattleJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh6.70.9NowNowBellevueBellevueSeattleSeattle
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh)JanFebMarAprMayJunJulAugSepOctNovDec
Bellevue 1.11.93.14.55.56.16.65.94.32.51.30.9
Seattle 1.22.03.14.55.66.26.65.94.32.61.30.9

This report illustrates the typical weather for Bellevue and Seattle year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used on this page vary between places and are discussed in detail on each place's dedicated page:

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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