Seattle Sand Point Weather Office, Washington climate: Climate normals at a NOAA weather station

What is the weather like at Seattle Sand Point Weather Office each month?

August is the warmest month, with normal highs of 77°F; December the coldest, with normal lows of 37°F. The most precipitation falls in November (5.85 in), the least in July (0.78 in).

Which months are mildest at Seattle Sand Point Weather Office?

Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, July has the fewest days with rain (5).

That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.

When is the last frost at Seattle Sand Point Weather Office?

In Seattle Sand Point Weather Office, the last spring frost (32°F) comes after March 8 in half of years and after March 29 in one year in ten; the first autumn frost comes before November 23 in half of years and before November 4 in one year in ten.

Last spring frost, half of years after

March 81 year in 10 after March 29; 9 in 10 after February 13

First autumn frost, half of years before

November 231 year in 10 before November 4; 9 in 10 before December 16

NOAA puts the median frost-free season at 259 days, and the season without a hard freeze (28°F) at 308 days.

A hard freeze (28°F) comes after February 11 in half of springs and before December 11 in half of autumns.

The USDA's 2023 Plant Hardiness Zone Map puts Seattle Sand Point Weather Office in zone 9a in ZIP code 98115, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 9a: the coldest night of a typical year reaches 23°F (28 complete years).

Frost dates for every NOAA station in Washington · Frost dates by ZIP code

How hot and how cold does it get at Seattle Sand Point Weather Office?

In a normal year in Seattle Sand Point Weather Office, 2 days a year reach 90°F, 25 nights fall to 32°F or colder and 163 days bring measurable precipitation.

Days at 90°F or more

2a normal year

Days at 100°F or more

fewer than 1a normal year

Nights at 32°F or colder

25a normal year

Days that stay below freezing

1high of 32°F or less

Days with 0.01 inch of precipitation

163a normal year

Days with 1 inch of snow or more

2a normal year

The highest temperature in this station's record (since 1986) is 107°F, on June 28, 2021; the lowest is 10°F, on December 21, 1990.

The wettest calendar year on that record is 2012, with 46.91 in; the snowiest season is 2008–09, with 11.9 inches.

How sunny is it at Seattle Sand Point Weather Office?

Over a year 67% of the sunlight that would reach the ground under clear skies gets through the clouds at Seattle Sand Point Weather Office, 3.4 kWh per square metre a day. August is the sunniest month (78%) and December the cloudiest (51%).

How many heating and cooling degree days does Seattle Sand Point Weather Office record?

A normal year at Seattle Sand Point Weather Office brings 4,483 heating degree days, 17% fewer than the median U.S. place (5,373), and 211 cooling degree days, 77% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,207 growing degree days a year above 50°F.

Have recent years at Seattle Sand Point Weather Office been warmer than normal?

2025 averaged 54.9°F, 1.7°F above the 1991-2020 normal of 53.2°F. 4 of the 4 complete years since 2021 ran warmer than the normal.

Over 31 complete years from 1987 to 2025, the station's annual mean temperature rose at a fitted 2.3°F per century (+0.13°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.

Which places near Seattle Sand Point Weather Office share this climate record?

18 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.

• Bellevue, WAalso near: Renton (8 mi, 53.6°F a year); Seattle Boeing Field (8 mi, 53.8°F a year)154,377 people · 8 mi SE
• Kirkland, WAalso near: Seattle Boeing Field (12 mi, 53.8°F a year); Renton (14 mi, 53.6°F a year)95,499 people · 2 mi E
• Redmond, WAalso near: Monroe (13 mi, 49.5°F a year); Seattle Boeing Field (13 mi, 53.8°F a year)82,195 people · 7 mi E
• Shoreline, WAalso near: Everett (11 mi, 51.4°F a year); Seattle Boeing Field (16 mi, 53.8°F a year)66,251 people · 6 mi NW
• Bothell, WAalso near: Everett (10 mi, 51.4°F a year); Monroe (11 mi, 49.5°F a year)51,770 people · 6 mi N
• Mountlake Terrace, WA25,198 people · 8 mi N
• Kenmore, WA24,166 people · 4 mi N
• Union Hill-Novelty Hill, WA23,272 people · 11 mi E
• Woodinville, WA13,942 people · 7 mi NE
• Lake Forest Park, WA13,276 people · 5 mi N
• Brier, WA6,603 people · 7 mi N
• Esperance, WA3,988 people · 9 mi NW
• Indianola, WA3,517 people · 13 mi W
• Clyde Hill, WA3,158 people · 4 mi SE
• Medina, WA2,976 people · 4 mi S
• Woodway, WA1,323 people · 9 mi NW
• Yarrow Point, WA1,134 people · 3 mi SE
• Hunts Point, WA460 people · 3 mi S

Nearby and next

• Washington climateThe statewide normals and every place in the state
• Seattle Boeing Field, WA11 miles from this station, 53.8°F a year
• Renton, WA14 miles from this station, 53.6°F a year
• Everett, WA16 miles from this station, 51.4°F a year
• Monroe, WA16 miles from this station, 49.5°F a year
• Compare two placesMonth by month, side by side

Download these normals (CSV) · JSON · How these figures are made