Monona County, IA Weather Forecast

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81°
F

Showers And Thunderstorms Likely

Compare major city weather across Monona County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.

Saturday, May 30, 2026
Wind: 8 to 18 mph SE
Today

Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Southeast wind 8 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.

County weather hub

County Weather Overview

This county weather page brings together forecast coverage for Monona County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.

Current forecast coverage spans 2 of 2 mapped cities in Monona County.

Page Snapshot

Page focus
county weather
Forecast window
May 30 to Jun 5, 2026
Latest sync
May 30, 2026 8:40 AM CDT
Forecast office
OAX
Source
NOAA / NWS
Next High
81°F
Today
Next Low
62°F
Tonight
Rain Outlook
13
Periods mentioning precipitation
Windiest
8 to 18 mph
Today

Daily Outlook

Today
May 30
Showers And Thunderstorms Likely
81 °F
/ 62°F
Wind 8 to 18 mph
Sun
May 31
Chance Showers And Thunderstorms
84 °F
/ 60°F
Wind 10 to 14 mph
Mon
Jun 1
Slight Chance Showers And Thunderstorms then Mostly Sunny
85 °F
/ 59°F
Wind 2 to 9 mph
Tue
Jun 2
Mostly Sunny then Slight Chance Showers And Thunderstorms
84 °F
/ 60°F
Wind 3 to 9 mph
Wed
Jun 3
Chance Showers And Thunderstorms
83 °F
/ 61°F
Wind 7 to 15 mph
Thu
Jun 4
Chance Showers And Thunderstorms
83 °F
/ 62°F
Wind 8 to 14 mph
Fri
Jun 5
Chance Showers And Thunderstorms
85 °F
/ 60°F
Wind 5 to 8 mph

This Week in Monona County

Monday looks like the warmest upcoming period in Monona County at 85 degrees F.

Monday Night is the coolest period ahead with temperatures near 59 degrees F.

The strongest winds are forecast for Today at about 8 to 18 mph SE.

Precipitation is mentioned in 13 upcoming forecast periods.

Forecast Details

Last updated
May 30, 2026 8:40 AM CDT
Coverage
7 days
Time zone
America/Chicago
Forecast office
OAX
Radar station
KOAX

Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.

Open NOAA source

Extended Forecast

Tonight
May 30
62°F
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
12 to 18 mph ESE

A chance of showers and thunderstorms before midnight, then showers and thunderstorms likely between midnight and 5am, then a chance of showers and thunderstorms. Mostly cloudy. Low around 62, with temperatures rising to around 65 overnight. East southeast wind 12 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Sunday
May 31
84°F
Chance Showers And Thunderstorms
10 to 14 mph SE

A chance of showers and thunderstorms before 5pm, then showers and thunderstorms likely. Mostly cloudy. High near 84, with temperatures falling to around 82 in the afternoon. Southeast wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night
May 31
60°F
Showers And Thunderstorms Likely
2 to 10 mph SE

Showers and thunderstorms likely before 1am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 60. Southeast wind 2 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Monday
Jun 1
85°F
Slight Chance Showers And Thunderstorms then Mostly Sunny
2 to 9 mph NW

A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 85. Northwest wind 2 to 9 mph, with gusts as high as 17 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

Monday Night
Jun 1
59°F
Mostly Clear
2 to 9 mph N

Mostly clear, with a low around 59. North wind 2 to 9 mph.

Tuesday
Jun 2
84°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
3 to 9 mph E

A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. East wind 3 to 9 mph.

Tuesday Night
Jun 2
60°F
Slight Chance Showers And Thunderstorms
6 to 9 mph SE

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60. Southeast wind 6 to 9 mph.

Wednesday
Jun 3
83°F
Chance Showers And Thunderstorms
7 to 15 mph SSE

A chance of showers and thunderstorms. Partly sunny, with a high near 83. South southeast wind 7 to 15 mph, with gusts as high as 24 mph.

Wednesday Night
Jun 3
61°F
Chance Showers And Thunderstorms
9 to 15 mph S

A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South wind 9 to 15 mph, with gusts as high as 23 mph.

Thursday
Jun 4
83°F
Chance Showers And Thunderstorms
8 to 14 mph S

A chance of showers and thunderstorms. Mostly cloudy, with a high near 83. South wind 8 to 14 mph, with gusts as high as 23 mph.

Thursday Night
Jun 4
62°F
Chance Showers And Thunderstorms
6 to 13 mph S

A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. South wind 6 to 13 mph, with gusts as high as 20 mph.

Friday
Jun 5
85°F
Chance Showers And Thunderstorms
5 to 8 mph SW

A chance of showers and thunderstorms. Partly sunny, with a high near 85. Southwest wind 5 to 8 mph.

Friday Night
Jun 5
60°F
Chance Showers And Thunderstorms
3 to 8 mph SSE

A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 60. South southeast wind 3 to 8 mph.

Detailed Forecast

Period Conditions Temp Wind
Today
May 30
Showers And Thunderstorms Likely
81°F
8 to 18 mph
SE
Tonight
May 30
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
62°F
12 to 18 mph
ESE
Sunday
May 31
Chance Showers And Thunderstorms
84°F
10 to 14 mph
SE
Sunday Night
May 31
Showers And Thunderstorms Likely
60°F
2 to 10 mph
SE
Monday
Jun 1
Slight Chance Showers And Thunderstorms then Mostly Sunny
85°F
2 to 9 mph
NW
Monday Night
Jun 1
Mostly Clear
59°F
2 to 9 mph
N
Tuesday
Jun 2
Mostly Sunny then Slight Chance Showers And Thunderstorms
84°F
3 to 9 mph
E
Tuesday Night
Jun 2
Slight Chance Showers And Thunderstorms
60°F
6 to 9 mph
SE
Wednesday
Jun 3
Chance Showers And Thunderstorms
83°F
7 to 15 mph
SSE
Wednesday Night
Jun 3
Chance Showers And Thunderstorms
61°F
9 to 15 mph
S
Thursday
Jun 4
Chance Showers And Thunderstorms
83°F
8 to 14 mph
S
Thursday Night
Jun 4
Chance Showers And Thunderstorms
62°F
6 to 13 mph
S
Friday
Jun 5
Chance Showers And Thunderstorms
85°F
5 to 8 mph
SW
Friday Night
Jun 5
Chance Showers And Thunderstorms
60°F
3 to 8 mph
SSE

Coverage

Tracked cities
2
Coverage
100%

Forecast coverage currently spans 2 of 2 mapped cities in Monona County.

Largest mapped city population in this region: 2,766.

MONONA COUNTY COURTHOUSE  ONAWA  IOWA
MONONA COUNTY COURTHOUSE ONAWA IOWA image
Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.