Lake Forest Park, WA climate
Lake Forest Park has mild winters and cool summers. A typical July afternoon reaches 75°, a January night drops to 36°, and about 4 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Lake Forest Park feels like
Winter
Spring
Summer
Fall
Lake Forest Park weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 47° | 36° | 5.1" | 0.9" | 19 | 1 | 37° – 46° |
| February | 49° | 36° | 3.7" | 1.0" | 16 | 1 | 35° – 48° |
| March | 53° | 38° | 4.3" | 0 | 18 | 0 | 41° – 50° |
| April | 58° | 41° | 3.0" | 0 | 16 | 0 | 45° – 55° |
| May | 65° | 47° | 2.2" | 0 | 12 | 0 | 51° – 60° |
| June | 69° | 51° | 1.7" | 0 | 11 | 0 | 57° – 65° |
| July | 75° | 55° | 0.9" | 0 | 5 | 0 | 61° – 69° |
| August | 76° | 55° | 1.0" | 0 | 6 | 0 | 61° – 68° |
| September | 70° | 52° | 1.7" | 0 | 9 | 0 | 58° – 64° |
| October | 59° | 45° | 4.0" | 0 | 15 | 0 | 49° – 57° |
| November | 51° | 39° | 5.7" | 0.2" | 19 | 0 | 41° – 50° |
| December | 46° | 36° | 5.6" | 1.7" | 20 | 1 | 37° – 44° |
| Year | 60° | 44° | 38.8" | 3.8" | 163 | 2 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Lake Forest Park
Lake Forest Park gets 39 inches of rain and melted snow a year. November is the wettest month and July the driest. Rain or snow falls on about 163 days a year.
About 259 frost-free days a year
In half of years the last 32° night comes by March 8 and the first one by November 23. That leaves about 259 frost-free days for gardens, longer than 92% of U.S. towns.
Heating and cooling a home in Lake Forest Park
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Lake Forest Park, 96% of that work is heating and 4% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Lake Forest Park and its neighbors
Lake Forest Park borders 2 towns with climate data. January nights across them vary by 0.2°. Shoreline has the coldest January nights (36°) and Kenmore the hottest July afternoons (76°). Lake Forest Park’s January low is 36° and its July high 75°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Lake Forest Park compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Lake Forest Park averaged 1.1° warmer than the 1900s. The biggest change is in January (+2.5°). The shift is smaller than in 58% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Lake Forest Park’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 35° to 48°. September is the most reliable, staying within 6°.
Common questions about Lake Forest Park’s climate
What is the coldest month in Lake Forest Park?
December, with a typical high of 46° and a low of 36°.
What is the hottest month in Lake Forest Park?
August, with a typical high of 76° and a low of 55°. About 2 days a year reach 90°.
How much snow does Lake Forest Park get?
About 4 inches in a normal winter, most of it in December.
When is the first frost in Lake Forest Park?
In half of years the first 32° night comes by November 23, and the last spring frost by March 8.
What is the rainiest month in Lake Forest Park?
November, with 5.7 inches of rain and melted snow. The year totals 39 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Lake Forest Park itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Seattle Sand Pt WSFO, WA (5 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.