Linn County, IA Weather Forecast
County weather hub
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Compare major city weather across Linn County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Showers and thunderstorms likely before 8am, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 81. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Linn County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 12 of 12 mapped cities in Linn County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- May 18 to May 23, 2026
- Latest sync
- May 17, 2026 6:02 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Linn County
Monday looks like the warmest upcoming period in Linn County at 81 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 43 degrees F.
The strongest winds are forecast for Monday at about 15 mph S.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- May 17, 2026 6:02 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KDVN
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 10pm, then showers and thunderstorms. Mostly cloudy, with a low around 59. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
A slight chance of showers and thunderstorms before 7am. Mostly cloudy, with a high near 68. New rainfall amounts between a quarter and half of an inch possible.
Partly cloudy, with a low around 44.
Mostly sunny, with a high near 63.
Mostly cloudy, with a low around 43.
Mostly sunny, with a high near 66.
A chance of rain showers after 1am. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.
A chance of rain showers. Partly sunny, with a high near 72. Chance of precipitation is 30%.
A slight chance of rain showers before 1am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 52.
A slight chance of showers and thunderstorms before 7am. Partly sunny, with a high near 78.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 57.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
May 18
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
81°F |
15 mph
S
|
|
Monday Night
May 18
|
Chance Showers And Thunderstorms then Showers And Thunderstorms
|
59°F |
15 mph
S
|
|
Tuesday
May 19
|
Slight Chance Showers And Thunderstorms then Mostly Cloudy
|
68°F |
15 mph
W
|
|
Tuesday Night
May 19
|
Partly Cloudy
|
44°F |
5 to 15 mph
NW
|
|
Wednesday
May 20
|
Mostly Sunny
|
63°F |
5 to 10 mph
N
|
|
Wednesday Night
May 20
|
Mostly Cloudy
|
43°F |
5 mph
NE
|
|
Thursday
May 21
|
Mostly Sunny
|
66°F |
5 to 10 mph
E
|
|
Thursday Night
May 21
|
Mostly Cloudy then Chance Rain Showers
|
47°F |
5 to 10 mph
E
|
|
Friday
May 22
|
Chance Rain Showers
|
72°F |
5 to 10 mph
E
|
|
Friday Night
May 22
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
52°F |
5 to 10 mph
E
|
|
Saturday
May 23
|
Slight Chance Showers And Thunderstorms then Partly Sunny
|
78°F |
5 to 10 mph
SE
|
|
Saturday Night
May 23
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
57°F |
5 to 10 mph
SE
|
Major City Forecasts
Live forecast snapshots for major cities across Linn County.
Coverage
Forecast coverage currently spans 12 of 12 mapped cities in Linn County.
Largest mapped city population in this region: 134,027.
