City of Sammamish in Spring
In spring (March, April and May), City of Sammamish sees average daytime highs around 58°F and overnight lows near 41°F, with 15.7 in of precipitation over about 48 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 50°F in early March to 65°F by late May. The sky is clear or mostly clear about 15% of the time across spring, and the air most often feels dry.
Spring is City of Sammamish's 3rd-best season to visit on our travel score. For the whole year in context, see City of Sammamish's year-round climate.
- Avg daytime high
- 58°F
- 3rd-warmest season
- Avg overnight low
- 41°F
- Precipitation
- 15.7 in
- 48 wet days
- Avg wind
- 5 mph
- Travel score
- 3.6
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in City of Sammamish in Spring
Over the season highs climb from about 50°F in early March to 65°F by late May.
A typical spring day in City of Sammamish reaches about 58°F and drops to 41°F overnight. The warmest of the three months is May, the coolest March.
How spring really feels in City of Sammamish
Once humidity and wind are folded in, spring brings about 0 days that feel above 90°F and 7 that feel at or below 32°F.
The story in spring is cold — wind chill drags the overnight "feels like" below the raw low.
City of Sammamish weather by month
How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 45° / 35° | 8.3 | 18.7 | 3.6 | 8.7 | 0.8 |
| Feb | 48° / 36° | 5.8 | 15.5 | 2.6 | 9.9 | 1.5 |
| Mar | 52° / 37° | 6.5 | 18.7 | 1.8 | 11.6 | 2.2 |
| Apr | 57° / 41° | 5.4 | 16.5 | 0.2 | 13.3 | 3.4 |
| May | 63° / 46° | 3.8 | 12.8 | 0 | 14.9 | 5.1 |
| Jun | 67° / 50° | 3.2 | 11.4 | 0 | 15.7 | 5.9 |
| Jul | 74° / 54° | 1.3 | 6.5 | 0 | 15.4 | 7.7 |
| Aug | 74° / 54° | 1.6 | 5.7 | 0 | 14.1 | 7.9 |
| Sep | 68° / 49° | 3.4 | 9 | 0 | 12.4 | 6.6 |
| Oct | 58° / 43° | 6.6 | 15.1 | 0 | 10.6 | 3.9 |
| Nov | 49° / 38° | 9.0 | 18.7 | 1 | 9.1 | 1.6 |
| Dec | 44° / 35° | 8.1 | 18.4 | 3.4 | 8.3 | 0.6 |
Cloud cover in Spring
The sky is clear or mostly clear about 15% of the time across spring.
Chance of precipitation in Spring
City of Sammamish gets around 15.7 in of rain and snow over 48 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 5 mph across spring.
Sunrise & sunset in Spring
Daylight runs from about 10 h 42 min in early March to 15 h 24 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 4.2 kWh/m².
Hazard calendar for City of Sammamish
In spring, City of Sammamish overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
City of Sammamish's rainy season runs October–April, when most of the year's rain falls.
Is spring a good time to visit City of Sammamish?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a weaker month for outdoor sightseeing in City of Sammamish.
What to pack for City of Sammamish in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, City of Sammamish sees daytime highs around 58°F and nights near 41°F. Pack a warm layer and rain gear. Worth having: sun protection. About 48 days see rain.
UV index in City of Sammamish in Spring
Clear-sky midday UV across spring averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in City of Sammamish peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 17 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 4 | 5 | 7 | 6 | 8 | 6 | 4 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Air quality in City of Sammamish in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in City of Sammamish is worst in September — around 22 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (December, 7 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 9 | 12 | 12 | 11 | 10 | 10 | 18 | 22 | 12 | 8 | 7 |
| Level | Good | Good | Moderate | Good | Good | Good | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 9 | Good |
| Mar | 12 | Moderate |
| Apr | 12 | Good |
| May | 11 | Good |
| Jun | 10 | Good |
| Jul | 10 | Good |
| Aug | 18 | Moderate |
| Sep | 22 | Moderate |
| Oct | 12 | Good |
| Nov | 8 | Good |
| Dec | 7 | Good |
Where is City of Sammamish?
City of Sammamish sits at 47.6°N, 122.0°W, 479 ft above sea level, in United States. The nearest listed city is Sammamish, 3.1 mi away.
Topography around City of Sammamish
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of City of Sammamish.
Within 2 miles, the terrain around City of Sammamish has only modest variations in elevation — a maximum elevation change of 620 ft around an average of 410 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,995 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 8,540 ft.
The land around City of Sammamish is covered by trees (76%) within 2 miles, trees (75%) within 10 miles, and trees (76%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for City of Sammamish (47.6044°, -122.0377°, elevation 479 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.