Lyon County, IA Weather Forecast
County weather hub
Sunny
Compare major city weather across Lyon County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 54. North northwest wind 10 to 20 mph, with gusts as high as 30 mph.
County Weather Overview
This county weather page brings together forecast coverage for Lyon 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 Lyon County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 16 to Oct 20, 2026
- Latest sync
- Oct 14, 2026 2:49 AM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Lyon County
Tuesday looks like the warmest upcoming period in Lyon County at 71 degrees F.
Friday Night is the coolest period ahead with temperatures near 33 degrees F.
The strongest winds are forecast for Friday at about 10 to 20 mph NNW.
The forecast from Oct 16 through Oct 20 stays mostly dry.
Forecast Details
- Last updated
- Oct 14, 2026 2:49 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- FSD
- Radar station
- KFSD
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Widespread frost after 1am. Clear, with a low around 33.
Widespread frost before 7am. Sunny, with a high near 62.
Mostly clear, with a low around 43.
Mostly sunny, with a high near 65.
Partly cloudy, with a low around 45.
Sunny, with a high near 68.
Mostly clear, with a low around 46.
Sunny, with a high near 71.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Oct 16
|
Sunny
|
54°F |
10 to 20 mph
NNW
|
|
Friday Night
Oct 16
|
Clear then Widespread Frost
|
33°F |
0 to 5 mph
WSW
|
|
Saturday
Oct 17
|
Widespread Frost then Sunny
|
62°F |
10 to 20 mph
SSW
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
43°F |
15 mph
S
|
|
Sunday
Oct 18
|
Mostly Sunny
|
65°F |
10 to 15 mph
SSW
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
45°F |
0 to 5 mph
ENE
|
|
Monday
Oct 19
|
Sunny
|
68°F |
0 to 5 mph
E
|
|
Monday Night
Oct 19
|
Mostly Clear
|
46°F |
0 to 5 mph
SE
|
|
Tuesday
Oct 20
|
Sunny
|
71°F |
5 to 10 mph
SSE
|
Major City Forecasts
Live forecast snapshots for major cities across Lyon County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Lyon County.
Largest mapped city population in this region: 2,518.
