Local weather forecast

Weather in Castalia, IA

Updated 2026-08-11 10:30 local time · ZIP codes 52133

Sunny
Now73°F

Sunny

High / Low87° / 68°
Rain chance73%
Wind9 mph
Weather alerts

Active alerts

1
Severe Thunderstorm Warning issued August 11 at 6:56AM CDT until August 11 at 7:30AM CDT by NWS La Crosse WI

SVRARX The National Weather Service in La Crosse has issued a * Severe Thunderstorm Warning for... Southern Fayette County in northeastern Iowa... * Until 730 AM CDT. * At 656 AM CDT, a severe thunderstorm was located near Fairbank, or near Oelwein, moving east at 50 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * This severe thunderstorm will be near... Oelwein around 700 AM CDT. Stanley around 705 AM CDT. Other locations impacted by this severe thunderstorm include Westgate, County Roads 3 And W 13, Highways 3 And 187, County Road W 33 And 187, County Road W 45 And 187, County Roads 3 And W 45, and County Roads 3 And W 33.

Safety instructions

For your protection move to an interior room on the lowest floor of a building.

Hourly

Next hours

NowSunny73°10% rain
11 AMSunny78°8% rain
12 PMSunny84°5% rain
1 PMSunny86°5% rain
2 PMSunny86°6% rain
3 PMSunny87°5% rain
4 PMSunny87°4% rain
5 PMSunny86°4% rain
6 PMSunny85°4% rain
7 PMSunny82°6% rain
8 PMSunny80°7% rain
9 PMPartly Cloudy78°10% rain
Forecast

3-day weather forecast

Today2026-08-11
Sunny
87° 68°Sunny
Rain 73%Gust 11 mph
Tomorrow2026-08-12
Sunny
81° 65°Sunny
Rain 78%Gust 16 mph
Thursday2026-08-13
Mist
80° 68°Mist
Rain 73%Gust 6 mph
Conditions

Weather details

Feels like75°F
Humidity82%
Pressure29.88 inHg
Visibility6 mi
Wind9 mph ESE
Wind gusts13 mph
Precipitation0.00 in
UV index2
Daylight

Sunrise, sunset and moon

Sunrise06:08 AM
Sunset08:15 PM
Moonrise04:05 AM
Moon phaseNew Moon
Practical guide

Weather insights for today

Umbrella not essential

Rain chance stays relatively low over the next 12 hours (up to 12%).

Light layers should work

It feels like 75°F with winds near 9 mph.

Best window: 11 AM

78°F, 8% rain chance and 7 mph wind.

Allow a little extra driving time

Visibility is around 6 mi; gusts may reach 13 mph.

Good conditions for an easy run

Current temperature is 73°F, wind 9 mph, rain chance up to 12%.

Low UV protection needs

UV index is 2.

Castalia weather today

Sunny and 73°F in Castalia, IA. Today's high is 87°F with a 73% rain chance. Winds are around 9 mph with gusts near 13 mph. Relative humidity is 82%, pressure is 29.88 inHg, and visibility is about 6 miles.

Tonight and tomorrow in Castalia

Sunrise is at 06:08 AM and sunset is at 08:15 PM. Tomorrow's forecast calls for Sunny with a high near 81°F and a low near 65°F. The maximum rain chance is 78%.

Nearby

Weather near Castalia

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