Local weather forecast

Weather in Hartford, IL

Updated 2026-08-11 10:15 local time · ZIP codes 62048

Sunny
Now89°F

Sunny

High / Low105° / 78°
Rain chance3%
Wind11 mph
Weather alerts

Active alerts

2
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.

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

NowSunny89°3% rain
11 AMSunny97°2% rain
12 PMSunny101°1% rain
1 PMSunny104°1% rain
2 PMSunny105°1% rain
3 PMSunny105°1% rain
4 PMSunny105°1% rain
5 PMSunny104°0% rain
6 PMSunny102°0% rain
7 PMSunny98°1% rain
8 PMClear92°1% rain
9 PMClear89°2% rain
Forecast

3-day weather forecast

Today2026-08-11
Sunny
105° 78°Sunny
Rain 3%Gust 13 mph
Tomorrow2026-08-12
Sunny
97° 81°Sunny
Rain 4%Gust 10 mph
Thursday2026-08-13
Sunny
103° 74°Sunny
Rain 57%Gust 13 mph
Conditions

Weather details

Feels like98°F
Humidity61%
Pressure29.95 inHg
Visibility6 mi
Wind11 mph WSW
Wind gusts14 mph
Precipitation0.00 in
UV index4
Daylight

Sunrise, sunset and moon

Sunrise06:10 AM
Sunset08:00 PM
Moonrise04:14 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 3%).

Choose light, breathable clothing

It feels like 98°F with winds near 11 mph.

Best window: 10 AM

89°F, 3% rain chance and 11 mph wind.

Driving conditions look generally normal

Visibility is around 6 mi; gusts may reach 15 mph.

Running conditions are less comfortable

Current temperature is 89°F, wind 11 mph, rain chance up to 3%.

Moderate UV protection recommended

UV index is 4. Sunscreen and sunglasses are sensible for longer outdoor time.

Hartford weather today

Sunny and 89°F in Hartford, IL. Today's high is 105°F with a 3% rain chance. Winds are around 11 mph with gusts near 14 mph. Relative humidity is 61%, pressure is 29.95 inHg, and visibility is about 6 miles.

Tonight and tomorrow in Hartford

Sunrise is at 06:10 AM and sunset is at 08:00 PM. Tomorrow's forecast calls for Sunny with a high near 97°F and a low near 81°F. The maximum rain chance is 4%.

Nearby

Weather near Hartford

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