Seattle, WA weather in October
October in Seattle: cool, with frequent rain. Highs 61°F, lows 47°F, about 15 wet days.
- Normal high
- 61°F
- Normal low
- 47°F
- Wet days
- 15
- 3.6 in total
- Muggy days
- 0
- dew point 65°F+
How October changes from start to finish
| October 1 | October 31 | |
|---|---|---|
| Normal high | 66°F | 56°F |
| Normal low | 50°F | 44°F |
| Chance of a wet day | 38% | 54% |
| Sunrise / sunset | 7:08 am / 6:49 pm | 7:51 am / 5:53 pm |
| Daylight | 11.7 h | 10.0 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical October day
- 6 am49°Fdew point 46°F
- 9 am53°Fdew point 47°F
- Noon58°Fdew point 47°F
- 3 pm60°Fdew point 46°F
- 6 pm56°Fdew point 46°F
- 9 pm53°Fdew point 47°F
NOAA hourly normals (local standard time) from Seattle Boeing Fld (5 mi away); average wind 5 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F7 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph0 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow15 of 31
- Notable rainat least 0.10 in9 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per October, counted from daily records for each year 1991-2020.
Rain in October
Normal precipitation is 3.6 in; a dry October brings about 2.5 in and a wet one about 4.2 in (25th and 75th percentiles). About 2 days bring half an inch or more.
How October varies from year to year
- Warmest October, 1991-20202014: average high 65°F
- Coolest October2013: average high 58°F
- Wettest October2016: 10.3 in
- Driest October2002: 0.5 in
- Highest reading81°F (October 11, 1991)
- Lowest reading29°F (October 30, 1991)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
October compared with September and November
| September | October | November | |
|---|---|---|---|
| Normal high | 71°F | 61°F | 52°F |
| Normal low | 53°F | 47°F | 41°F |
| Wet days | 9 | 15 | 19 |
| Comfortable days | 23 | 7 | 0 |
| Daylight | 12.6 h | 10.8 h | 9.3 h |
Highs change by -10°F from September and -9°F into November.
Nearby alternatives in October
- Drier: Leavenworth, WA78 mi · high 62°F · 9 wet days
How Seattle ranks in October
- Normal high316th warmest of 378 cities; 6th of 9 in Washington
- Wet days362nd driest of 378
- Comfortable days263rd most of 340
What to pack for Seattle in October
- A rain jacket or umbrella – rain on about 15 days
Heating and cooling
October has 354 heating degree days and 0 cooling degree days (base 65°F), 8% of the year's total heating and cooling demand.
Questions
How cold is Seattle in October?
The normal high is 61°F and the normal low is 47°F. From 1991 to 2020 the coldest October reading was 29°F (October 30, 1991).
Does it rain a lot in Seattle in October?
About 15 days in October have at least 0.01 in of precipitation, and the normal total is 3.7 in. The wettest October in 1991-2020 was in 2016 (10.3 in); the driest was in 2002 (0.5 in).
Is October a good time to visit Seattle?
October ranks 7th of 12 months on our comfort score for Seattle (52 out of 100). It has about 7 comfortable days. The best months are June, July and August.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: Seattle Sand Pt WSFO (USW00094290), 6.6 mi NNE of the city center, 60 ft (113 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Seattle Boeing Fld (USW00024234), 5.4 mi SSE of the city center, 20 ft (153 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Seattle-Tacoma International Airport (727930-24233), 11 mi S of the city center, 369 ft (196 ft higher than the city). Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).