Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

Fair

68°F

20°C

Humidity	100%
Wind Speed	S 13 mph
Barometer	29.95 in
Dewpoint	68°F (20°C)
Visibility	10.00 mi
Last update	18 Aug 5:15 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Mapleton IA

Overnight
Low: 65 °F
Slight Chance
T-storms
Tuesday
High: 77 °F
Showers
Likely then
Slight Chance
T-storms
Tuesday Night
Low: 60 °F
Slight Chance
T-storms then
Partly Cloudy
Wednesday
High: 75 °F
Partly Sunny
then Chance
T-storms
Wednesday Night
Low: 58 °F
Chance
T-storms then
Slight Chance
Showers
Thursday
High: 78 °F
Sunny
Thursday Night
Low: 62 °F
Slight Chance
T-storms
Friday
High: 82 °F
Sunny
Friday Night
Low: 62 °F
Mostly Clear

Detailed Forecast

Overnight

A 20 percent chance of showers and thunderstorms. Cloudy, with a low around 65. South southwest wind around 5 mph.

Tuesday

Showers and thunderstorms likely before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 77. Southwest wind around 6 mph becoming light and variable in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday Night

A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 60. Light and variable wind.

Wednesday

A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 75. Calm wind.

Wednesday Night

A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 58. Calm wind. Chance of precipitation is 30%.

Thursday

Sunny, with a high near 78. Calm wind becoming south southwest around 6 mph in the afternoon.

Thursday Night

A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 62. Light south wind.

Friday

Sunny, with a high near 82. Light west southwest wind.

Friday Night

Mostly clear, with a low around 62. Calm wind.

Saturday

Mostly sunny, with a high near 77. Calm wind becoming northeast around 5 mph in the afternoon.

Saturday Night

A slight chance of showers. Mostly clear, with a low around 60. Light east southeast wind.