Local weather forecast

Weather in Brownstown, IL

Updated 2026-08-11 11:00 local time · ZIP codes 62418

Sunny
Now82°F

Sunny

High / Low98° / 77°
Rain chance4%
Wind14 mph
Weather alerts

Active alerts

1
Extreme Heat Warning issued August 11 at 2:17AM CDT until August 12 at 8:00PM CDT by NWS St Louis MO

* WHAT...Dangerously hot conditions with heat index values up to 111. * WHERE...Portions of south central and southwest Illinois and central and east central Missouri. * WHEN...Until 8 PM CDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Safety instructions

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668.

Hourly

Next hours

NowSunny82°3% rain
12 PMSunny97°2% rain
1 PMSunny98°2% rain
2 PMSunny98°2% rain
3 PMSunny98°2% rain
4 PMSunny97°1% rain
5 PMSunny96°1% rain
6 PMSunny93°2% rain
7 PMSunny90°2% rain
8 PMClear86°4% rain
9 PMClear84°4% rain
10 PMClear82°5% rain
Forecast

3-day weather forecast

Today2026-08-11
Sunny
98° 77°Sunny
Rain 4%Gust 15 mph
Tomorrow2026-08-12
Sunny
90° 74°Sunny
Rain 57%Gust 11 mph
Thursday2026-08-13
Sunny
87° 70°Sunny
Rain 74%Gust 13 mph
Conditions

Weather details

Feels like86°F
Humidity84%
Pressure30.01 inHg
Visibility10 mi
Wind14 mph SW
Wind gusts17 mph
Precipitation0.00 in
UV index5
Daylight

Sunrise, sunset and moon

Sunrise06:05 AM
Sunset07:56 PM
Moonrise04:08 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 5%).

Choose light, breathable clothing

It feels like 86°F with winds near 14 mph.

Best window: 8 PM

86°F, 4% rain chance and 10 mph wind.

Driving conditions look generally normal

Visibility is around 10 mi; gusts may reach 24 mph.

Run with a few weather adjustments

Current temperature is 82°F, wind 14 mph, rain chance up to 5%.

Moderate UV protection recommended

UV index is 5. Sunscreen and sunglasses are sensible for longer outdoor time.

Brownstown weather today

Sunny and 82°F in Brownstown, IL. Today's high is 98°F with a 4% rain chance. Winds are around 14 mph with gusts near 17 mph. Relative humidity is 84%, pressure is 30.01 inHg, and visibility is about 10 miles.

Tonight and tomorrow in Brownstown

Sunrise is at 06:05 AM and sunset is at 07:56 PM. Tomorrow's forecast calls for Sunny with a high near 90°F and a low near 74°F. The maximum rain chance is 57%.

Nearby

Weather near Brownstown

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