Mason City, IA Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Mason City, IA.

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Current Conditions — Mason City, IA

MASON CITY (KMCW)

Clear

78.8 F
Humidity:42%
Wind Speed:S 18.4 G 27.6 mph
Barometer:29.76 in
Dewpoint:53.6 F
Visibility:10.00 mi
Precip:--
Heat Index:78.3 F
Wind Chill:NA
Apr 22 2026, 06:20 PM CDT
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5-Day Forecast — Mason City, IA

Wednesday

High 84 °F
Forecast Missing
Wednesday
Night
Low 59 °F
Mostly Cloudy
Thursday

High 71 °F
T-storms Likely
Thursday
Night
Low 46 °F
T-storms
Friday

High 62 °F
Partly Sunny
Friday
Night
Low 41 °F
Mostly Clear
Saturday

High 62 °F
Mostly Cloudy
Saturday
Night
Low 46 °F
Mostly Cloudy
Sunday

High 66 °F
Chance of Rain Showers

Detailed Forecast — Mason City, IA

Wednesday
Partly Cloudy. High near 84°F. Wind around 16 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly Cloudy. Low around 59°F. Wind 14 to 16 mph, with gusts as high as 25 mph.
Thursday
Thunderstorms Likely. High near 71°F. Wind 15 to 21 mph, with gusts as high as 33 mph.
Thursday Night
Thunderstorms. Low around 46°F. Wind 9 to 13 mph, with gusts as high as 23 mph.
Friday
Partly Sunny. High near 62°F. Wind 10 to 14 mph, with gusts as high as 20 mph.
Friday Night
Mostly Clear. Low around 41°F. Wind 6 to 7 mph, with gusts as high as 12 mph.
Saturday
Mostly Cloudy. High near 62°F. Wind 5 to 8 mph, with gusts as high as 13 mph.
Saturday Night
Mostly Cloudy. Low around 46°F. Wind around 3 mph, with gusts as high as 7 mph.
Sunday
Chance of Rain Showers. High near 66°F. Wind 15 to 18 mph, with gusts as high as 26 mph.
Sunday Night
Thunderstorms. Low around 48°F. Wind around 23 mph, with gusts as high as 29 mph.
Monday
Thunderstorms Likely. High near 62°F. Wind 20 to 25 mph, with gusts as high as 30 mph.
Monday Night
Chance of Showers. Low around 39°F. Wind around 21 mph, with gusts as high as 25 mph.
Tuesday
Mostly Cloudy. High near 59°F. Wind 12 to 17 mph, with gusts as high as 23 mph.
Tuesday Night
Partly Cloudy. Low around 39°F. Wind around 3 mph, with gusts as high as 7 mph.
IA Radar
Current Radar • IA
Day 1 Outlook • April 22, 2026

Observation History — Mason City, IA

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
06:20 PM CDT S 18.4 G 27.6 10.00 Clear -- 78.8 53.6 42% NA 78.3 29.76 1007.8
06:10 PM CDT S 19.6 G 26.5 10.00 Clear and Windy -- 80.6 53.6 39% NA 80.2 29.76 1007.8
06:05 PM CDT G 26.5 10.00 Clear -- 80.6 53.6 39% NA 80.2 29.76 1007.8
05:45 PM CDT G 33.4 10.00 Clear -- 80.6 53.6 39% NA 80.2 29.76 1007.8
05:35 PM CDT G 29.9 10.00 Clear -- 80.6 53.6 39% NA 80.2 29.76 1007.8
05:20 PM CDT 10.00 Clear -- 82.4 55.4 40% NA 81.7 29.76 1007.8
05:10 PM CDT 10.00 Clear -- 82.4 55.4 40% NA 81.7 29.76 1007.8
05:05 PM CDT G 29.9 10.00 Clear -- 82.4 53.6 37% NA 81.5 29.76 1007.8
04:45 PM CDT G 33.4 10.00 Clear -- 82.4 55.4 40% NA 81.7 29.77 1008.1
04:20 PM CDT G 34.5 10.00 Clear -- 82.4 55.4 40% NA 81.7 29.78 1008.5
04:10 PM CDT S 17.3 G 28.8 10.00 Clear -- 82.4 55.4 40% NA 81.7 29.79 1008.8
04:05 PM CDT G 32.2 10.00 Clear -- 82.4 55.4 40% NA 81.7 29.79 1008.8
03:50 PM CDT G 26.5 10.00 Clear -- 82.4 55.4 40% NA 81.7 29.79 1008.8
03:30 PM CDT G 32.2 10.00 Clear -- 82.4 57.2 42% NA 82.0 29.80 1009.1
03:15 PM CDT 10.00 Clear -- 80.6 59.0 48% NA 81.1 29.81 1009.5
03:00 PM CDT S 17.3 10.00 Clear -- 80.6 57.2 45% NA 80.8 29.82 1009.8
02:50 PM CDT G 29.9 10.00 Clear -- 80.6 57.2 45% NA 80.8 29.83 1010.2
02:40 PM CDT G 27.6 10.00 Clear -- 80.6 57.2 45% NA 80.8 29.83 1010.2
02:25 PM CDT G 32.2 10.00 Clear -- 80.6 57.2 45% NA 80.8 29.84 1010.5
02:10 PM CDT G 28.8 10.00 Clear -- 80.6 57.2 45% NA 80.8 29.84 1010.5
02:00 PM CDT 10.00 Clear -- 82.4 57.2 42% NA 82.0 29.84 1010.5
01:45 PM CDT S 16.1 10.00 Clear -- 82.4 57.2 42% NA 82.0 29.84 1010.5
01:15 PM CDT SE 18.4 10.00 Clear -- 80.6 53.6 39% NA 80.2 29.84 1010.5
01:10 PM CDT SE 18.4 G 24.2 10.00 Clear -- 80.6 53.6 39% NA 80.2 29.84 1010.5

Regional Weather Observation

MASON CITY (KMCW)

Clear
78.8 F

FOREST CITY (KFXY)

Clear and Windy
80.6 F

ALBERT LEA (KAEL)

Clear and Windy
80.6 F

AUSTIN MUNI (KAUM)

Clear
79.3 F

CHARLES CITY (KCCY)

Clear and Windy
80.6 F

ALGONA (KAXA)

Clear
80.6 F
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