Mason City weather in April

In April, Mason City sees average daytime highs of 57°F and overnight lows near 37°F, with 4.0 in of precipitation across 11.5 wet days and about 13.1 hours of daylight. It is the 7th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 52°F in the first days to 62°F by the end. The sky is clear or mostly clear about 26% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of April to 13 h 48 min by month's end. Set against the rest of the year, April is Mason City's 9th-clearest and 3rd-windiest month. For the whole year in context, see Mason City's year-round climate.

Daytime high
57°
7th warmest
Overnight low
37°
6th coldest
Precipitation
4.0 in
11.5 wet days
Daylight
13 h 12 min
5:38 AM – 6:48 PM
Cloud cover
65%
9th clearest
Wind
11 mph
3rd windiest
Solar energy
4.97 kWh/m²
Travel score
3.8
out of 10

Mason City is city and the county seat of Cerro Gordo County, Iowa, United States.

Density
376/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 52°F in the first days to 62°F by the end.

A typical April day in Mason City reaches about 57°F in the afternoon and slips back to 37°F overnight — a 20°F spread between the day's warmth and the night's chill. On most days the high lands between 42°F and 72°F. Set against its neighbours, April runs about 15°F warmer than March and about 12°F cooler than May.

20°40°60°80°151015202530
Avg high (°F)Avg low (°F)
15132
25132
35233
45233
55333
65334
75434
85434
95435
105535
115536
125636
135637
145637
155737
165738
175838
185839
195939
205939
215940
226040
236040
246041
256141
266142
276242
286242
296243
306343

How April really feels in Mason City

Once humidity and wind are folded in, April averages 0 days that feel above 90°F and 18 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
18
wind chill below the day's low

The story in April is cold — wind chill drags the overnight "feels like" below the raw low.

Mason City weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan24° / 1.16.15.79.20.0
Feb28° / 13°1.25.95.310.20.0
Mar42° / 25°2.48.53.911.60.7
Apr57° / 37°4.011.51.913.13.8
May69° / 49°5.113.60.114.45.8
Jun78° / 60°5.412.6015.16.3
Jul80° / 63°4.09.7014.96.7
Aug78° / 60°4.010.2013.86.9
Sep72° / 52°3.59.3012.36.9
Oct59° / 40°2.78.20.510.84.8
Nov43° / 27°1.96.52.89.50.9
Dec30° / 15°1.56.75.98.90.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 13% of April, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14159
24159
34159
44159
54060
64060
73961
83862
93862
103763
113664
123664
133664
143763
153763
163763
173763
183862
193862
203961
214159
224159
234159
244159
254258
264258
274060
284060
294159
304060

Chance of precipitation in April

Any precipitationSnow

Mason City gets around 4.0 in of rain and snow over 11.5 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 39% and peaks near 42% on the wettest days, and about 2 days bring snow. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
1317
2327
3327
4337
5347
6348
7358
8368
9378
10378
11388
12398
13408
14418
15417
16417
17427
18427
19426
20426
21415
22415
23414
24414
25414
26413
27413
28413
29412
30412

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

Most of April feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, April lands in the dry band about 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19910
29910
310000
49910
59910
69910
79910
89910
99910
109910
119910
129910
139910
149910
159820
169820
179820
189820
199820
209820
219910
229910
239910
249910
259820
269721
279721
289721
299631
309631

Wind in April

Winds average 11 mph in April.

Across April, daily wind ranges from about 10 mph on the calmest days to 11 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (mph)Feels
111light breeze
211light breeze
311light breeze
411light breeze
511light breeze
611light breeze
711light breeze
811light breeze
911light breeze
1011light breeze
1111light breeze
1211light breeze
1311light breeze
1411light breeze
1511light breeze
1611light breeze
1711light breeze
1811light breeze
1911light breeze
2011light breeze
2111light breeze
2211light breeze
2311light breeze
2411light breeze
2511light breeze
2611light breeze
2711light breeze
2811light breeze
2910light breeze
3010light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 84 minutes over April. Sunrise moves from 6:04 AM to 5:15 AM, and sunset from 6:31 PM to 7:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:046:31
212.56:026:32
312.56:016:33
412.65:596:34
512.65:576:35
612.75:556:37
712.75:536:38
812.85:526:39
912.85:506:40
1012.95:486:41
1112.95:466:43
1213.05:456:44
1313.05:436:45
1413.15:416:46
1513.15:396:47
1613.25:386:48
1713.25:366:50
1813.35:346:51
1913.35:336:52
2013.45:316:53
2113.45:296:54
2213.55:286:56
2313.55:266:57
2413.65:246:58
2513.65:236:59
2613.65:217:00
2713.75:207:01
2813.75:187:03
2913.85:177:04
3013.85:157:05

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.97 kWh/m².

For context, solar energy here swings from a low near 1.64 kWh/m² to a high of 6.38 kWh/m² in July across the year — April's 4.97 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
Planning a trip in April

Hazard calendar for Mason City

In seasonPeak

In April, Mason City sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Mason City's rainy season runs April–October, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is April a good time to visit Mason City?

Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.8
Sightseeing
7th-best month of the year
0.3
Beach & pool
7th-best month of the year

April is a weaker month for outdoor sightseeing in Mason City.

What to pack for Mason City in April

From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In April, Mason City sees daytime highs around 57°F and nights near 37°F. Worth packing: a warm layer, rain gear and sun protection. About 12 days see rain.

a warm layerrain gearsun protection

UV index in Mason City in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mason City peaks around June 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 16UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr6High
May7Very high
Jun9Very high
Jul7Very high
Aug7Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec2Low
Location & terrain

Where is Mason City?

Mason City sits at 43.2°N, 93.2°W, 1,129 ft above sea level, in United States. The nearest listed city is Albert Lea, 35 mi away.

Topography around Mason City

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Mason City.

Within 2 miles, the terrain around Mason City has only modest variations in elevation — a maximum elevation change of 135 ft around an average of 1,129 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 285 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 577 ft.

The land around Mason City is covered by trees (38%) and artificial surfaces (29%) within 2 miles, cropland (77%) within 10 miles, and cropland (89%) within 50 miles.

2 miles
135 ft
10 miles
285 ft
50 miles
577 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Albert Lea 35 mi · Austin 37 mi · Cedar Falls 58 mi · Waterloo 63 mi · Owatonna 64 mi · Fort Dodge 66 mi · Rochester 70 mi · Marshalltown 78 mi

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
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

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 Mason City (43.1536°, -93.201°, elevation 1,129 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).