Union Hill-Novelty Hill in Spring
In spring (March, April and May), Union Hill-Novelty Hill sees average daytime highs around 58°F and overnight lows near 42°F, with 17.2 in of precipitation over about 49 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 16% of the time across spring, and the air most often feels dry.
Spring is Union Hill-Novelty Hill's 3rd-best season to visit on our travel score. For the whole year in context, see Union Hill-Novelty Hill's year-round climate.
- Avg daytime high
- 58°F
- 3rd-warmest season
- Avg overnight low
- 42°F
- Precipitation
- 17.2 in
- 49 wet days
- Avg wind
- 5 mph
- Travel score
- 3.6
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Union Hill-Novelty Hill 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 Union Hill-Novelty Hill reaches about 58°F and drops to 42°F overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Union Hill-Novelty Hill
Once humidity and wind are folded in, spring brings about 0 days that feel above 90°F and 3 that feel at or below 32°F.
The story in spring is cold — wind chill drags the overnight "feels like" below the raw low.
Union Hill-Novelty Hill 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° / 36° | 9.0 | 19 | 4 | 8.7 | 0.8 |
| Feb | 48° / 36° | 6.1 | 15.5 | 2.9 | 9.9 | 1.5 |
| Mar | 52° / 38° | 7.1 | 19.1 | 2.3 | 11.6 | 2.2 |
| Apr | 57° / 41° | 5.9 | 16.7 | 0.3 | 13.3 | 3.4 |
| May | 63° / 46° | 4.1 | 13.2 | 0 | 14.9 | 5.1 |
| Jun | 67° / 51° | 3.5 | 11.4 | 0 | 15.7 | 5.9 |
| Jul | 73° / 54° | 1.6 | 6.3 | 0 | 15.4 | 7.6 |
| Aug | 74° / 54° | 1.8 | 5.7 | 0 | 14.1 | 7.8 |
| Sep | 68° / 49° | 3.7 | 9.2 | 0 | 12.4 | 6.5 |
| Oct | 58° / 43° | 7.4 | 15.3 | 0 | 10.6 | 3.8 |
| Nov | 49° / 38° | 9.9 | 19.1 | 0.9 | 9.1 | 1.6 |
| Dec | 44° / 35° | 8.7 | 18.7 | 3.9 | 8.3 | 0.6 |
Cloud cover in Spring
The sky is clear or mostly clear about 16% of the time across spring.
Chance of precipitation in Spring
Union Hill-Novelty Hill gets around 17.2 in of rain and snow over 49 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 30 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 4.1 kWh/m².
Hazard calendar for Union Hill-Novelty Hill
In spring, Union Hill-Novelty Hill overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Union Hill-Novelty Hill's rainy season runs October–April, when most of the year's rain falls.
Is spring a good time to visit Union Hill-Novelty Hill?
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 Union Hill-Novelty Hill.
What to pack for Union Hill-Novelty Hill in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Union Hill-Novelty Hill sees daytime highs around 58°F and nights near 42°F. Pack a warm layer and rain gear. Worth having: sun protection. About 49 days see rain.
UV index in Union Hill-Novelty Hill 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 Union Hill-Novelty Hill 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 Union Hill-Novelty Hill 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 Union Hill-Novelty Hill is worst in August — around 20 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 6 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 | 10 | 12 | 12 | 13 | 11 | 10 | 20 | 18 | 11 | 7 | 6 |
| Level | Good | Good | Moderate | Good | Moderate | Good | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 10 | Good |
| Mar | 12 | Moderate |
| Apr | 12 | Good |
| May | 13 | Moderate |
| Jun | 11 | Good |
| Jul | 10 | Good |
| Aug | 20 | Moderate |
| Sep | 18 | Moderate |
| Oct | 11 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
Where is Union Hill-Novelty Hill?
Union Hill-Novelty Hill sits at 47.7°N, 122.0°W, 551 ft above sea level, in United States. The nearest listed city is Sammamish, 3.7 mi away.
Topography around Union Hill-Novelty Hill
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Union Hill-Novelty Hill.
Within 2 miles, the terrain around Union Hill-Novelty Hill has only modest variations in elevation — a maximum elevation change of 689 ft around an average of 505 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,470 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,799 ft.
The land around Union Hill-Novelty Hill is covered by trees (85%) 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 Union Hill-Novelty Hill (47.6789°, -122.0283°, elevation 551 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.