Compare the Climate and Weather in Romainville and West Lake Sammamish

This page lets you compare and contrast the weather and climate in Romainville and West Lake Sammamish 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.

Romainville
France
West Lake Sammamish
Washington, United States
Map

Average High and Low Temperature

Compare the Average High and Low Temperature in Romainville and West Lake SammamishJanFebMarAprMayJunJulAugSepOctNovDec25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F593578443645284132NowNowWest Lake SammamishWest Lake SammamishRomainvilleRomainville
The daily average high and low air temperature at 2 meters above the ground. The thin dotted lines are the corresponding perceived temperatures.
HighJanFebMarAprMayJunJulAugSepOctNovDec
Romainville 44°F47°F53°F59°F66°F72°F76°F76°F69°F61°F51°F46°F
West Lake Sammamish 46°F50°F54°F60°F66°F71°F76°F77°F71°F60°F51°F45°F
LowJanFebMarAprMayJunJulAugSepOctNovDec
Romainville 36°F35°F39°F43°F49°F55°F58°F57°F53°F47°F41°F37°F
West Lake Sammamish 37°F38°F41°F44°F49°F54°F58°F58°F53°F47°F41°F37°F

Romainville

Average Hourly Temperature in RomainvilleJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldvery coldcoldcoldcoolcomfortablewarm

West Lake Sammamish

Average Hourly Temperature in West Lake SammamishJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldvery coldcoldcoldcoolcomfortablewarm
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 Romainville and West Lake SammamishJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%62267425NowNowWest Lake SammamishWest Lake SammamishRomainvilleRomainville
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
Romainville 30%36%41%46%47%54%61%59%53%43%32%27%
West Lake Sammamish 26%29%31%36%41%50%68%69%60%42%27%25%

Daily Chance of Precipitation

Compare the Daily Chance of Precipitation in Romainville and West Lake SammamishJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%3120609NowNowWest Lake SammamishWest Lake SammamishRomainvilleRomainville
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip.JanFebMarAprMayJunJulAugSepOctNovDec
Romainville 8.3d6.8d7.3d7.1d8.9d7.7d7.0d6.5d7.0d8.1d7.9d9.1d
West Lake Sammamish 16.0d14.4d15.6d12.6d10.3d8.1d4.2d3.9d6.9d12.8d17.6d16.7d

Average Monthly Rainfall

Compare the Average Monthly Rainfall in Romainville and West Lake SammamishJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in1.81.28.80.7NowNowWest Lake SammamishWest Lake SammamishRomainvilleRomainville
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
RainfallJanFebMarAprMayJunJulAugSepOctNovDec
Romainville 1.5″1.3″1.2″1.3″1.8″1.7″1.6″1.4″1.5″1.8″1.6″1.8″
West Lake Sammamish 7.0″6.0″5.2″3.7″2.5″1.9″0.8″1.0″2.2″5.2″8.7″7.5″

Average Monthly Snowfall

Compare the Average Monthly Snowfall in Romainville and West Lake SammamishJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in0.72.4NowNowWest Lake SammamishWest Lake Sammamish
The average snowfall accumulated over the course of a sliding 31-day period centered on the day in question.
SnowfallJanFebMarAprMayJunJulAugSepOctNovDec
Romainville 0.6″0.2″0.1″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.1″0.4″
West Lake Sammamish 1.8″0.5″0.1″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.3″1.8″

Hours of Daylight

Compare the Hours of Daylight in Romainville and West Lake SammamishJanFebMarAprMayJunJulAugSepOctNovDec4 hr4 hr6 hr6 hr8 hr8 hr10 hr10 hr12 hr12 hr14 hr14 hr16 hr16 hr18 hr18 hr20 hr20 hr16.28.2NowNowWest Lake SammamishWest Lake SammamishRomainvilleRomainville
The number of hours during which the Sun is at least partly above the horizon.
DaylightJanFebMarAprMayJunJulAugSepOctNovDec
Romainville 8.8h10.2h11.9h13.8h15.3h16.1h15.7h14.3h12.6h10.8h9.2h8.3h
West Lake Sammamish 8.9h10.3h12.0h13.7h15.2h15.9h15.5h14.2h12.5h10.8h9.3h8.5h

Chance of Muggy Conditions

Compare the Chance of Muggy Conditions in Romainville and West Lake SammamishJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%4NowNowWest Lake SammamishWest Lake SammamishRomainvilleRomainville
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy daysJanFebMarAprMayJunJulAugSepOctNovDec
Romainville 0.0d0.0d0.0d0.0d0.1d0.6d1.1d0.8d0.2d0.0d0.0d0.0d
West Lake Sammamish 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d

Average Wind Speed

Compare the Average Wind Speed in Romainville and West Lake SammamishJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph11.77.85.32.7NowNowWest Lake SammamishWest Lake SammamishRomainvilleRomainville
The average of mean hourly wind speeds at 10 meters above the ground.
Wind Speed (mph)JanFebMarAprMayJunJulAugSepOctNovDec
Romainville 11.511.210.79.99.18.78.48.18.99.810.311.1
West Lake Sammamish 5.14.94.54.03.43.12.82.83.24.05.05.2

Average Water Temperature

Compare the Average Water Temperature in Romainville and West Lake SammamishJanFebMarAprMayJunJulAugSepOctNovDec46°F46°F48°F48°F50°F50°F52°F52°F54°F54°F56°F56°F58°F58°FNaN5646NowNowWest Lake SammamishWest Lake Sammamish
The daily average wide-area surface water temperature.
Water Temp.JanFebMarAprMayJunJulAugSepOctNovDec
West Lake Sammamish 47°F46°F47°F49°F52°F54°F56°F56°F55°F53°F50°F48°F

Tourism Score

Compare the Tourism Score in Romainville and West Lake SammamishJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.20.20.1NowNowWest Lake SammamishWest Lake SammamishRomainvilleRomainville
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 Romainville and West Lake SammamishJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.12.1NowNowWest Lake SammamishWest Lake Sammamish
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 Romainville and West Lake SammamishJanFebMarAprMayJunJulAugSepOctNovDec0%0%20%20%40%40%60%60%80%80%100%100%NowNowWest Lake SammamishWest Lake SammamishRomainvilleRomainville
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 Romainville and West Lake SammamishJanFebMarAprMayJunJulAugSepOctNovDec500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°FNowNowWest Lake SammamishWest Lake SammamishRomainvilleRomainville
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 Romainville and West Lake SammamishJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh6.60.86.7NowNowWest Lake SammamishWest Lake SammamishRomainvilleRomainville
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh)JanFebMarAprMayJunJulAugSepOctNovDec
Romainville 1.11.93.34.75.86.56.45.64.12.51.30.8
West Lake Sammamish 1.11.93.14.55.56.16.65.94.32.51.30.9

This report illustrates the typical weather for Romainville and West Lake Sammamish 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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