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Mountlake Terrace, WA weather and climate

Snohomish County, WA · population 21,419 · about 486 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at Mountlake Terrace's own coordinates.

The year at a glance

Sunny days
149
clear or partly cloudy, per year
Precipitation
54 in
per year
Wet days
161
rain or snow per year
Snowfall
6 in
per year
Hot days
1
above 90 °F
Freezing nights
30
at or below 32 °F
Humidity
78%
average relative
Average temperature
53 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
4060JanMarMayJulSepNovDaily high, Jan: 47 °FDaily high, Feb: 49 °FDaily high, Mar: 53 °FDaily high, Apr: 58 °FDaily high, May: 64 °FDaily high, Jun: 69 °FDaily high, Jul: 75 °FDaily high, Aug: 75 °FDaily high, Sep: 70 °FDaily high, Oct: 60 °FDaily high, Nov: 51 °FDaily high, Dec: 46 °FDaily low, Jan: 37 °FDaily low, Feb: 37 °FDaily low, Mar: 39 °FDaily low, Apr: 42 °FDaily low, May: 48 °FDaily low, Jun: 52 °FDaily low, Jul: 56 °FDaily low, Aug: 56 °FDaily low, Sep: 52 °FDaily low, Oct: 46 °FDaily low, Nov: 40 °FDaily low, Dec: 36 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high474953586469757570605146
Daily low373739424852565652464036

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.55.07.5JanMarMayJulSepNovMountlake Terrace, Jan: 7.1 inMountlake Terrace, Feb: 4.7 inMountlake Terrace, Mar: 5.5 inMountlake Terrace, Apr: 4.4 inMountlake Terrace, May: 3.1 inMountlake Terrace, Jun: 2.8 inMountlake Terrace, Jul: 1.3 inMountlake Terrace, Aug: 1.5 inMountlake Terrace, Sep: 2.8 inMountlake Terrace, Oct: 5.6 inMountlake Terrace, Nov: 7.8 inMountlake Terrace, Dec: 7.1 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Mountlake Terrace7.14.75.54.43.12.81.31.52.85.67.87.1

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovMountlake Terrace, Jan: 7 daysMountlake Terrace, Feb: 9 daysMountlake Terrace, Mar: 9 daysMountlake Terrace, Apr: 10 daysMountlake Terrace, May: 13 daysMountlake Terrace, Jun: 13 daysMountlake Terrace, Jul: 21 daysMountlake Terrace, Aug: 21 daysMountlake Terrace, Sep: 19 daysMountlake Terrace, Oct: 13 daysMountlake Terrace, Nov: 8 daysMountlake Terrace, Dec: 7 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Mountlake Terrace7991013132121191387

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About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).