Mount Vernon in Spring
In spring (March, April and May), Mount Vernon sees average daytime highs around 54°F and overnight lows near 41°F, with 18.1 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 46°F in early March to 62°F by late May. The sky is clear or mostly clear about 18% of the time across spring, and the air most often feels dry.
Spring is Mount Vernon's 3rd-best season to visit on our travel score. For the whole year in context, see Mount Vernon's year-round climate.
- Avg daytime high
- 54°F
- 3rd-warmest season
- Avg overnight low
- 41°F
- Precipitation
- 18.1 in
- 49 wet days
- Avg wind
- 4 mph
- Travel score
- 2.8
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Mount Vernon in Spring
Over the season highs climb from about 46°F in early March to 62°F by late May.
A typical spring day in Mount Vernon reaches about 54°F and drops to 41°F overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Mount Vernon
Once humidity and wind are folded in, spring brings about 0 days that feel above 90°F and 12 that feel at or below 32°F.
The story in spring is cold — wind chill drags the overnight "feels like" below the raw low.
Mount Vernon 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 | 42° / 34° | 10.2 | 19.1 | 9.5 | 8.6 | 0.2 |
| Feb | 44° / 34° | 6.7 | 15.4 | 9 | 9.9 | 0.7 |
| Mar | 48° / 37° | 8.1 | 19.7 | 9.8 | 11.6 | 1.4 |
| Apr | 53° / 41° | 5.8 | 16.6 | 4 | 13.4 | 2.5 |
| May | 60° / 47° | 4.1 | 12.8 | 0.7 | 15 | 4.4 |
| Jun | 64° / 51° | 3.1 | 10.9 | 0 | 15.8 | 5.5 |
| Jul | 70° / 55° | 1.5 | 5.6 | 0 | 15.5 | 7.4 |
| Aug | 71° / 56° | 1.8 | 5.7 | 0 | 14.1 | 7.5 |
| Sep | 65° / 51° | 3.9 | 9.5 | 0 | 12.4 | 6.1 |
| Oct | 55° / 44° | 7.9 | 15.2 | 0.7 | 10.6 | 3.2 |
| Nov | 46° / 37° | 11.4 | 19.4 | 7.7 | 9 | 1.0 |
| Dec | 41° / 33° | 10.0 | 19 | 12.2 | 8.2 | 0.1 |
Cloud cover in Spring
The sky is clear or mostly clear about 18% of the time across spring.
Chance of precipitation in Spring
Mount Vernon gets around 18.1 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 4 mph across spring.
Sunrise & sunset in Spring
Daylight runs from about 10 h 42 min in early March to 15 h 36 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 Mount Vernon
In spring, Mount Vernon overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Mount Vernon's rainy season runs October–April, when most of the year's rain falls.
Is spring a good time to visit Mount Vernon?
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 Mount Vernon.
What to pack for Mount Vernon in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Mount Vernon sees daytime highs around 54°F and nights near 41°F. Pack a warm layer and rain gear. Worth having: sun protection. About 49 days see rain.
Sea temperature near Mount Vernon in Spring
The nearest coast averages about 48°F across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 25 mi away) is warmest in August at about 54°F and coldest in February near 46°F.
The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 46 | 46 | 47 | 48 | 50 | 52 | 53 | 54 | 53 | 50 | 49 | 47 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 46 | Bracing |
| Feb | 46 | Bracing |
| Mar | 47 | Bracing |
| Apr | 48 | Bracing |
| May | 50 | Bracing |
| Jun | 52 | Bracing |
| Jul | 53 | Bracing |
| Aug | 54 | Bracing |
| Sep | 53 | Bracing |
| Oct | 50 | Bracing |
| Nov | 49 | Bracing |
| Dec | 47 | Bracing |
UV index in Mount Vernon 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 Mount Vernon 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 18 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 Mount Vernon 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 Mount Vernon is worst in September — around 18 µg/m³ PM2.5 (moderate), about 3.2× 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) | 7 | 9 | 12 | 12 | 12 | 11 | 11 | 18 | 18 | 12 | 7 | 6 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 9 | Good |
| Mar | 12 | Good |
| Apr | 12 | Good |
| May | 12 | Good |
| Jun | 11 | Good |
| Jul | 11 | Good |
| Aug | 18 | Moderate |
| Sep | 18 | Moderate |
| Oct | 12 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
Where is Mount Vernon?
Mount Vernon sits at 48.4°N, 122.3°W, 95 ft above sea level, in United States. The nearest listed city is Anacortes, 14 mi away.
Topography around Mount Vernon
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Mount Vernon.
Within 2 miles, the terrain around Mount Vernon has significant variations in elevation — a maximum elevation change of 938 ft around an average of 89 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 4,045 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 10,755 ft.
The land around Mount Vernon is covered by trees (29%), grassland (28%) and artificial surfaces (27%) within 2 miles, trees (41%) and grassland (25%) within 10 miles, and trees (57%) and water (29%) 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 Mount Vernon (48.4212°, -122.3341°, elevation 95 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.