Spanaway, United States experiences average highs of 16°C (61°F) and lows of 7°C (45°F) throughout the year. Rainfall is frequent, averaging about 13 rainy days per month. Average highs have stayed broadly stable across the available records.
Spanaway, United States Weather & Climate 2026
Monthly climate averages for Spanaway, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: May–Oct 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5.3/10
Best: June, July, August, September
UV Index
4
Low
Temperature 16°C / 7°C
Feels Like 14°C / 5°C
Rainy Days 13
Rainfall 113 mm
Sunshine 8 h
Humidity 78%
Wind Speed 14 km/h
Dew Point 8°C
Snow Days 5 days
Frost Days 5 days
Hottest Month
26°C
August
Avg Low14°C
Rain3days
Coldest Month
2°C
February
Avg High8°C
Rain17days
Driest Month
2days
July
Avg High26°C
Avg Low14°C
Windiest Month
15 km/h
December (Gusts 36)
Worst Time to Visit
Consider avoiding January, February, December due to heavy rainfall.
Sun Position
Sunrise 05:15
Daylight 15.9h
Sunset 21:08
Live conditions—
Spanaway on the map · live conditions
Spanaway, United States
- Continent
- Americas
- Country
- United States
- City
- Spanaway
- Population
- 27.2K
- Elevation
- 116 m
- Coordinates
- 47.10°, -122.43°
Seasonal Breakdown
Spring
Mar–May
Avg High 15°C
Avg Low 5°C
Rain 15 days/mo
Summer
Jun–Aug
Avg High 24°C
Avg Low 13°C
Rain 5 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 16°C
Avg Low 8°C
Rain 13 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 8°C
Avg Low 2°C
Rain 18 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 8°C / 2°C . Feb: 8°C / 2°C . Mar: 11°C / 3°C . Apr: 14°C / 5°C . May: 19°C / 8°C . Jun: 22°C / 11°C . Jul: 26°C / 14°C . Aug: 26°C / 14°C . Sep: 22°C / 12°C . Oct: 15°C / 8°C . Nov: 11°C / 5°C . Dec: 8°C / 3°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 192 mm. Feb: 160 mm. Mar: 142 mm. Apr: 113 mm. May: 64 mm. Jun: 53 mm. Jul: 9 mm. Aug: 17 mm. Sep: 63 mm. Oct: 141 mm. Nov: 191 mm. Dec: 211 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 85%. Feb: 84%. Mar: 82%. Apr: 77%. May: 74%. Jun: 71%. Jul: 66%. Aug: 68%. Sep: 75%. Oct: 82%. Nov: 86%. Dec: 87%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 15 km/h . Feb: 15 km/h . Mar: 14 km/h . Apr: 15 km/h . May: 13 km/h . Jun: 13 km/h . Jul: 12 km/h . Aug: 12 km/h . Sep: 12 km/h . Oct: 14 km/h . Nov: 15 km/h . Dec: 15 km/h .
Sunshine
Sunshine
Sunshine: Jan: 4h. Feb: 5h. Mar: 8h. Apr: 9h. May: 11h. Jun: 12h. Jul: 13h. Aug: 12h. Sep: 10h. Oct: 7h. Nov: 5h. Dec: 4h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 1. Feb: UV 2. Mar: UV 3. Apr: UV 5. May: UV 6. Jun: UV 7. Jul: UV 7. Aug: UV 6. Sep: UV 5. Oct: UV 3. Nov: UV 2. Dec: UV 1.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 5 days. Feb: 8 days. Mar: 5 days. Apr: 2 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 1 days. Dec: 6 days.
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending drier by about 12 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 27°C | Aug · 26°C |
| Coldest month | Feb 2025 · 1°C | Feb · 2°C |
| Wettest month | Dec 2025 · 338 mm | Dec · 211 mm |
| Windiest month | Dec 2025 · 18 km/h | Dec · 15 km/h |
Month-by-Month Weather Table
January
Wet 
February
Poor March
Wet April
Fair May
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Fair November
Wet December
Wet | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 8°C / 2°C | 6°C / -1°C | 18days (192 mm) Wet | 4.2h Fair | 85% Humid | 1.4 Low | Wet | View Details |
| February | 8°C / 2°C | 5°C / -2°C | 17days (160 mm) Wet | 5.4h Fair | 84% Humid | 2 Low | Poor | View Details |
| March | 11°C / 3°C | 9°C / 0°C | 18days (142 mm) Wet | 7.5h Good | 82% Humid | 3.4 Moderate | Wet | View Details |
| April | 14°C / 5°C | 12°C / 2°C | 16days (113 mm) Wet | 9.2h Good | 77% Humid | 5 Moderate | Fair | View Details |
| May | 19°C / 8°C | 18°C / 7°C | 11days (64 mm) Wet | 10.7h Excellent | 74% Muggy | 5.8 High | Good | View Details |
| June best | 22°C / 11°C | 21°C / 10°C | 9days (53 mm) Wet | 11.6h Excellent | 71% Muggy | 6.5 High | Excellent | View Details |
| July best | 26°C / 14°C | 26°C / 13°C | 2days (9 mm) Excellent | 12.6h Excellent | 66% Muggy | 6.9 High | Excellent | View Details |
| August best | 26°C / 14°C | 26°C / 14°C | 3days (17 mm) Excellent | 11.5h Excellent | 68% Muggy | 6 High | Excellent | View Details |
| September best | 22°C / 12°C | 21°C / 11°C | 8days (63 mm) Wet | 9.7h Good | 75% Muggy | 4.7 Moderate | Excellent | View Details |
| October | 15°C / 8°C | 14°C / 6°C | 14days (141 mm) Wet | 7h Good | 82% Humid | 3 Moderate | Fair | View Details |
| November | 11°C / 5°C | 9°C / 2°C | 18days (191 mm) Wet | 4.6h Fair | 86% Very Muggy | 1.7 Low | Wet | View Details |
| December | 8°C / 3°C | 5°C / -1°C | 19days (211 mm) Wet | 3.6h Poor | 87% Very Muggy | 1.1 Low | Wet | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Spanaway are June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Spanaway, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Spanaway is August, with average daytime highs of 26°C (79°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Spanaway is February, with average overnight lows of 2°C (35°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Spanaway is December, averaging 211mm of precipitation across 19 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Spanaway runs through December, January, March, November, with the heaviest rainfall in December. Based on 10-year averages for Spanaway.
Spanaway receives approximately 98 sunshine hours per year. The sunniest month is July with around 13 hours. Based on climate data for Spanaway.
The least favorable months to visit Spanaway are January, February, December, primarily due to heavy rainfall. For the best conditions, consider June, July, August, September instead.
The annual average UV index in Spanaway is 4, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Spanaway is 78%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Spanaway receives snow. Months with snowfall average 5 snow days and 6 cm (2 in) of accumulation, with about 5 frost days during winter.
Average wind speeds in Spanaway are 14 km/h (9 mph). The windiest month is December with peak winds reaching 15 km/h (9 mph) (gusts up to 36 km/h / 23 mph).
Spanaway averages 4 clear-sky days per month with overall cloud cover around 64%. The clearest skies occur in July.
The annual average dew point in Spanaway is 8°C (46°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Spanaway has a Warm-Summer Mediterranean climate, classified as Csb under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Spanaway ranges from 5°C (41°F) to 14°C (57°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Spanaway. It earns a climate score of 8.2/10 with Excellent.
For June in Spanaway, pack Warm evening layer, Umbrella, Sunscreen (SPF 30+), Sunglasses, Comfortable walking shoes. With average highs of 22°C (71°F) and 9 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
Last updated: