Hazardous Weather Conditions
Current conditions at
Sioux County Regional Airport (KSXK)
Lat: 42.99°NLon: 96.16°WElev: 1409ft.
Overcast
54°F
12°C
| Humidity | 94% |
| Wind Speed | NW 13 mph |
| Barometer | 29.68 in |
| Dewpoint | 52°F (11°C) |
| Visibility | 10.00 mi |
| Wind Chill | 50°F (10°C) |
| Last update | 18 May 3:15 am CDT |
Extended Forecast for
Alton IA
Overnight

Low: 54 °F
Cloudy
Monday
High: 66 °F
Slight Chance
T-storms then
Chance
T-stormsMonday Night

Low: 43 °F
Showers and
BreezyTuesday

High: 58 °F
Decreasing
Clouds and
BreezyTuesday Night

Low: 36 °F
Partly Cloudy
Wednesday

High: 63 °F
Mostly Sunny
Wednesday Night

Low: 42 °F
Mostly Cloudy
Thursday

High: 66 °F
Mostly Cloudy
Thursday Night
Low: 44 °F
Mostly Cloudy
then Chance
T-storms
Detailed Forecast
Overnight
Cloudy, with a steady temperature around 54. Northwest wind around 10 mph.
Monday
A 50 percent chance of showers and thunderstorms, mainly after noon. Cloudy, with a high near 66. North northwest wind 5 to 10 mph becoming northeast in the afternoon.
Monday Night
Showers and possibly a thunderstorm. Low around 43. Breezy, with a north northwest wind 15 to 20 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 58. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 25 mph.
Tuesday Night
Partly cloudy, with a low around 36. North northwest wind 10 to 15 mph becoming light north in the evening. Winds could gust as high as 20 mph.
Wednesday
Mostly sunny, with a high near 63. Calm wind becoming south southeast around 5 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 42.
Thursday
Mostly cloudy, with a high near 66.
Thursday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 44.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 69.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 47.
Saturday
Partly sunny, with a high near 75.
Saturday Night
A 30 percent chance of showers. Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 83.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Alton IA
43°N 96.01°W (Elev. 1289 ft)
43°N 96.01°W (Elev. 1289 ft)
1:33 am CDT May 18, 2026
3am CDT May 18, 2026-6pm CDT May 24, 2026



