Local weather forecast

Weather in Winchester, IL

Updated 2026-08-11 12:45 local time · ZIP codes 62694

Sunny
Now88°F

Sunny

High / Low99° / 75°
Rain chance5%
Wind17 mph
Weather alerts

Active alerts

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

* WHAT...Heat index values up to 106. * WHERE...Portions of south central, southwest, and west central Illinois and central, east central, northeast, and southeast Missouri. * WHEN...Until 8 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

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.

Hourly

Next hours

NowSunny88°4% rain
2 PMSunny98°2% rain
3 PMSunny99°1% rain
4 PMSunny98°1% rain
5 PMSunny97°1% rain
6 PMSunny95°1% rain
7 PMSunny91°2% rain
8 PMSunny87°3% rain
9 PMClear85°3% rain
10 PMClear83°3% rain
11 PMClear81°4% rain
12 AMClear82°3% rain
Forecast

3-day weather forecast

Today2026-08-11
Sunny
99° 75°Sunny
Rain 5%Gust 17 mph
Tomorrow2026-08-12
Sunny
89° 75°Sunny
Rain 57%Gust 13 mph
Thursday2026-08-13
Partly Cloudy
91° 71°Partly Cloudy
Rain 17%Gust 17 mph
Conditions

Weather details

Feels like97°F
Humidity66%
Pressure29.93 inHg
Visibility10 mi
Wind17 mph WSW
Wind gusts20 mph
Precipitation0.00 in
UV index5
Daylight

Sunrise, sunset and moon

Sunrise06:10 AM
Sunset08:03 PM
Moonrise04:12 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 4%).

Choose light, breathable clothing

It feels like 97°F with winds near 17 mph.

Best window: 8 PM

87°F, 3% rain chance and 8 mph wind.

Allow a little extra driving time

Visibility is around 10 mi; gusts may reach 23 mph.

Running conditions are less comfortable

Current temperature is 88°F, wind 17 mph, rain chance up to 4%.

Moderate UV protection recommended

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

Winchester weather today

Sunny and 88°F in Winchester, IL. Today's high is 99°F with a 5% rain chance. Winds are around 17 mph with gusts near 20 mph. Relative humidity is 66%, pressure is 29.93 inHg, and visibility is about 10 miles.

Tonight and tomorrow in Winchester

Sunrise is at 06:10 AM and sunset is at 08:03 PM. Tomorrow's forecast calls for Sunny with a high near 89°F and a low near 75°F. The maximum rain chance is 57%.

Nearby

Weather near Winchester

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