National Weather Service United States Department of Commerce

Significant threat for flash flooding continues across the southwestern U.S.; river flooding is also possible

Heavy precipitation continues to be forecast for much of the Southwest U.S. due to the remnants of Odile. The heaviest rainfall will be concentrated across southern Arizona, southern New Mexico and western Texas where 3 to 6 inches could fall through Friday, with some locales receiving up to 9 inches. Flash flooding, as well as river flooding, will be a risk for many locations in this region.
Read More...

Current Conditions

En Español

Share |

Johnston IA

7 Day Forecast

For More Weather Information:

Des Moines, IA Local Forecast Office

Today

Dense Fog

Dense
Fog

High: 72 °F

Tonight

Partly Cloudy

Partly
Cloudy

Low: 57 °F

Friday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 82 °F

Friday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 68 °F

Saturday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 82 °F

Saturday
Night

Mostly Clear

Mostly
Clear

Low: 57 °F

Sunday

Sunny

Sunny

High: 74 °F

Sunday
Night

Mostly Clear

Mostly
Clear

Low: 50 °F

Monday

Sunny

Sunny

High: 72 °F

Detailed Forecast

  • Today Areas of dense fog before 9am. Otherwise, mostly sunny, with a high near 72. Light east southeast wind becoming southeast 5 to 10 mph in the morning.
  • Tonight Partly cloudy, with a low around 57. South southeast wind around 7 mph.
  • Friday A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 82. South wind 8 to 15 mph, with gusts as high as 21 mph.
  • Friday Night A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. South wind 9 to 11 mph.
  • Saturday A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Southwest wind 8 to 10 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
  • Saturday Night Mostly clear, with a low around 57.
  • Sunday Sunny, with a high near 74.
  • Sunday Night Mostly clear, with a low around 50.
  • Monday Sunny, with a high near 72.
  • Monday Night Mostly clear, with a low around 48.
  • Tuesday Sunny, with a high near 72.
  • Tuesday Night Mostly clear, with a low around 50.
  • Wednesday Mostly sunny, with a high near 71.