Superior in Spring
In spring (March, April and May), Superior sees average daytime highs around 42°F and overnight lows near 31°F, with 9.1 in of precipitation over about 29 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 26°F in early March to 58°F by late May. The sky is clear or mostly clear about 26% of the time across spring, and the air most often feels dry.
Spring is Superior's 3rd-best season to visit on our travel score. For the whole year in context, see Superior's year-round climate.
- Avg daytime high
- 42°F
- 3rd-warmest season
- Avg overnight low
- 31°F
- Precipitation
- 9.1 in
- 29 wet days
- Avg wind
- 10 mph
- Travel score
- 1.1
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Superior in Spring
Over the season highs climb from about 26°F in early March to 58°F by late May.
A typical spring day in Superior reaches about 42°F and drops to 31°F overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Superior
Once humidity and wind are folded in, spring brings about 0 days that feel above 90°F and 68 that feel at or below 32°F.
The story in spring is cold — wind chill drags the overnight "feels like" below the raw low.
Superior 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 | 19° / 8° | 1.0 | 6.3 | 6.9 | 8.8 | 0.0 |
| Feb | 22° / 10° | 1.1 | 5.3 | 5.6 | 10 | 0.0 |
| Mar | 31° / 20° | 1.9 | 7.3 | 5.1 | 11.6 | 0.0 |
| Apr | 41° / 31° | 3.3 | 10.2 | 4.2 | 13.3 | 0.4 |
| May | 53° / 42° | 3.8 | 11.1 | 0.5 | 14.8 | 2.9 |
| Jun | 65° / 55° | 4.1 | 11.6 | 0 | 15.6 | 5.5 |
| Jul | 73° / 64° | 3.9 | 11.7 | 0 | 15.3 | 6.7 |
| Aug | 73° / 64° | 4.0 | 10.5 | 0 | 14 | 6.9 |
| Sep | 66° / 56° | 3.6 | 10.7 | 0 | 12.4 | 5.9 |
| Oct | 52° / 44° | 4.1 | 10.8 | 0.8 | 10.6 | 2.8 |
| Nov | 38° / 30° | 2.6 | 8.9 | 5 | 9.2 | 0.1 |
| Dec | 26° / 17° | 1.8 | 7.4 | 7.8 | 8.4 | 0.0 |
Cloud cover in Spring
The sky is clear or mostly clear about 26% of the time across spring.
Chance of precipitation in Spring
Superior gets around 9.1 in of rain and snow over 29 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 10 mph across spring.
Sunrise & sunset in Spring
Daylight runs from about 10 h 42 min in early March to 15 h 18 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 5.0 kWh/m².
Is spring a good time to visit Superior?
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 Superior.
What to pack for Superior in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Superior sees daytime highs around 42°F and nights near 31°F. Pack a warm layer and a heavy coat. Worth having: rain gear and sun protection. About 29 days see rain.
Sea temperature near Superior in Spring
The nearest coast averages about 36°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 12 mi away) is warmest in August at about 63°F and coldest in February near 34°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) | 36 | 34 | 34 | 36 | 38 | 44 | 55 | 63 | 58 | 50 | 43 | 38 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 36 | Bracing |
| Feb | 34 | Bracing |
| Mar | 34 | Bracing |
| Apr | 36 | Bracing |
| May | 38 | Bracing |
| Jun | 44 | Bracing |
| Jul | 55 | Bracing |
| Aug | 63 | Cool |
| Sep | 58 | Bracing |
| Oct | 50 | Bracing |
| Nov | 43 | Bracing |
| Dec | 38 | Bracing |
UV index in Superior 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 Superior peaks around June 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 3 | 5 | 6 | 8 | 7 | 7 | 5 | 3 | 2 | 1 |
| Level | Low | Low | Moderate | Moderate | High | Very high | High | High | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 3 | Moderate |
| Apr | 5 | Moderate |
| May | 6 | High |
| Jun | 8 | Very high |
| Jul | 7 | High |
| Aug | 7 | High |
| Sep | 5 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Superior?
Superior sits at 46.7°N, 92.1°W, 643 ft above sea level, in United States. The nearest listed city is Duluth, 4.3 mi away.
Topography around Superior
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Superior.
Within 2 miles, the terrain around Superior has only modest variations in elevation — a maximum elevation change of 118 ft around an average of 630 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 912 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,322 ft.
The land around Superior is covered by artificial surfaces (33%), water (22%) and trees (21%) within 2 miles, trees (53%) and water (28%) within 10 miles, and trees (77%) 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 Superior (46.7208°, -92.1041°, elevation 643 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.