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Current weather in Mendon is few clouds.

Where can I find the hourly weather forecast for Mendon?

This page shows hourly weather forecast for Mendon, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Mendon updated regularly?

Weather data for Mendon is updated regularly with the latest available observations and forecasts.

Now · 8:33 PM

Mendon Weather & Hourly Forecast

United States · Illinois · 62351

89°F

Mostly clear night

Feels like: 97°F

💧 Humidity 58% 🌡 Pressure 29.85 inHg 💨 Wind 8 mph 👁 Visibility 6.2 mi ☁ Clouds 15% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:34 AM 🌇 Sunset 7:34 PM

Hourly Forecast for Mendon

Today

9:00 PM

Mostly clear night

89° 💧 None 💨 8 mph H 58%29.85 inHg

Tomorrow

12:00 AM

Clear night

85° 💧 None 💨 9 mph H 53%29.85 inHg

3:00 AM

Clear night

80° 💧 None 💨 9 mph H 55%29.88 inHg

6:00 AM

Clear night

78° 💧 None 💨 8 mph H 58%29.88 inHg

9:00 AM

Sunny

86° 💧 None 💨 11 mph H 43%29.94 inHg

12:00 PM

Mostly sunny

94° 💧 None 💨 11 mph H 29%29.91 inHg

3:00 PM

Sunny

98° 💧 None 💨 12 mph H 22%29.85 inHg

6:00 PM

Sunny

97° 💧 None 💨 11 mph H 22%29.80 inHg

9:00 PM

Clear night

85° 💧 None 💨 8 mph H 36%29.85 inHg

Saturday

12:00 AM

Mostly clear night

83° 💧 None 💨 8 mph H 42%29.88 inHg

3:00 AM

Overcast night

81° 💧 0.01 in 💨 4 mph H 50%29.85 inHg

6:00 AM

Light rain

75° 💧 0.02 in 💨 2 mph H 73%29.88 inHg

9:00 AM

Mostly sunny

81° 💧 None 💨 5 mph H 60%29.91 inHg

12:00 PM

Partly cloudy

92° 💧 None 💨 6 mph H 30%29.88 inHg

3:00 PM

Mostly cloudy

103° 💧 None 💨 10 mph H 25%29.85 inHg

6:00 PM

Overcast

98° 💧 None 💨 13 mph H 34%29.83 inHg

Today

9:00 PM

Mostly clear night

89° 💧 None 💨 8 mph H 58%29.85 inHg

10:00 PM

Mostly clear night

88° 💧 None 💨 8 mph H 56%29.85 inHg

11:00 PM

Mostly clear night

87° 💧 None 💨 8 mph H 55%29.85 inHg

Tomorrow

12:00 AM

Clear night

85° 💧 None 💨 9 mph H 53%29.85 inHg

1:00 AM

Clear night

84° 💧 None 💨 9 mph H 53%29.88 inHg

2:00 AM

Clear night

81° 💧 None 💨 9 mph H 52%29.88 inHg

3:00 AM

Clear night

80° 💧 None 💨 9 mph H 55%29.88 inHg

4:00 AM

Clear night

79° 💧 None 💨 8 mph H 56%29.88 inHg

5:00 AM

Clear night

79° 💧 None 💨 8 mph H 58%29.88 inHg

6:00 AM

Clear night

78° 💧 None 💨 8 mph H 58%29.88 inHg

7:00 AM

Sunny

78° 💧 None 💨 7 mph H 58%29.91 inHg

8:00 AM

Sunny

81° 💧 None 💨 8 mph H 53%29.94 inHg

9:00 AM

Sunny

86° 💧 None 💨 11 mph H 43%29.94 inHg

10:00 AM

Sunny

90° 💧 None 💨 12 mph H 37%29.94 inHg

11:00 AM

Sunny

92° 💧 None 💨 11 mph H 33%29.94 inHg

12:00 PM

Mostly sunny

94° 💧 None 💨 11 mph H 29%29.91 inHg

1:00 PM

Mostly sunny

94° 💧 None 💨 11 mph H 26%29.88 inHg

2:00 PM

Sunny

96° 💧 None 💨 11 mph H 24%29.85 inHg

3:00 PM

Sunny

98° 💧 None 💨 12 mph H 22%29.85 inHg

4:00 PM

Sunny

99° 💧 None 💨 12 mph H 21%29.83 inHg

5:00 PM

Sunny

99° 💧 None 💨 11 mph H 21%29.83 inHg

6:00 PM

Sunny

97° 💧 None 💨 11 mph H 22%29.80 inHg

7:00 PM

Sunny

91° 💧 None 💨 10 mph H 26%29.80 inHg

8:00 PM

Clear night

87° 💧 None 💨 8 mph H 33%29.83 inHg

9:00 PM

Clear night

85° 💧 None 💨 8 mph H 36%29.85 inHg

10:00 PM

Clear night

85° 💧 None 💨 8 mph H 37%29.85 inHg

11:00 PM

Clear night

84° 💧 None 💨 8 mph H 40%29.85 inHg

Saturday

12:00 AM

Mostly clear night

83° 💧 None 💨 8 mph H 42%29.88 inHg

1:00 AM

Partly cloudy night

82° 💧 None 💨 5 mph H 45%29.88 inHg

2:00 AM

Overcast night

81° 💧 None 💨 2 mph H 48%29.88 inHg

3:00 AM

Overcast night

81° 💧 None 💨 4 mph H 50%29.85 inHg

4:00 AM

Overcast night

79° 💧 None 💨 5 mph H 52%29.85 inHg

5:00 AM

Light rain

77° 💧 0.01 in 💨 2 mph H 61%29.88 inHg

6:00 AM

Light rain

75° 💧 0.02 in 💨 2 mph H 73%29.88 inHg

7:00 AM

Light rain

74° 💧 0.01 in 💨 5 mph H 74%29.88 inHg

8:00 AM

Mostly sunny

77° 💧 None 💨 5 mph H 72%29.91 inHg

9:00 AM

Mostly sunny

81° 💧 None 💨 5 mph H 60%29.91 inHg

10:00 AM

Mostly sunny

86° 💧 None 💨 6 mph H 44%29.91 inHg

11:00 AM

Partly cloudy

89° 💧 None 💨 5 mph H 35%29.91 inHg

12:00 PM

Partly cloudy

92° 💧 None 💨 6 mph H 30%29.88 inHg

1:00 PM

Mostly cloudy

93° 💧 None 💨 7 mph H 28%29.88 inHg

2:00 PM

Overcast

103° 💧 None 💨 9 mph H 26%29.85 inHg

3:00 PM

Mostly cloudy

103° 💧 None 💨 10 mph H 25%29.85 inHg

4:00 PM

Overcast

103° 💧 None 💨 12 mph H 26%29.83 inHg

5:00 PM

Mostly cloudy

101° 💧 None 💨 13 mph H 29%29.83 inHg

6:00 PM

Overcast

98° 💧 None 💨 13 mph H 34%29.83 inHg

7:00 PM

Overcast

92° 💧 None 💨 11 mph H 44%29.85 inHg

8:00 PM

Partly cloudy night

86° 💧 None 💨 10 mph H 57%29.83 inHg

9:00 PM

Mostly cloudy night

85° 💧 None 💨 10 mph H 61%29.85 inHg

10:00 PM

Mostly cloudy night

81° 💧 None 💨 4 mph H 70%29.88 inHg

11:00 PM

Mostly cloudy night

80° 💧 None 💨 6 mph H 73%29.91 inHg

Sunday

12:00 AM

Mostly cloudy night

78° 💧 None 💨 8 mph H 76%29.91 inHg

1:00 AM

Mostly cloudy night

78° 💧 None 💨 11 mph H 76%29.91 inHg

2:00 AM

Mostly cloudy night

78° 💧 None 💨 12 mph H 74%29.91 inHg

3:00 AM

Partly cloudy night

77° 💧 None 💨 12 mph H 72%29.91 inHg

4:00 AM

Partly cloudy night

75° 💧 None 💨 10 mph H 73%29.91 inHg

5:00 AM

Mostly clear night

73° 💧 None 💨 8 mph H 78%29.94 inHg

6:00 AM

Mostly clear night

71° 💧 None 💨 7 mph H 83%29.94 inHg

7:00 AM

Mostly sunny

70° 💧 None 💨 7 mph H 86%29.97 inHg

8:00 AM

Sunny

74° 💧 None 💨 9 mph H 73%29.97 inHg

9:00 AM

Light rain

75° 💧 0.03 in 💨 9 mph H 78%30.00 inHg

10:00 AM

Light rain

78° 💧 0.01 in 💨 9 mph H 71%30.00 inHg

11:00 AM

Partly cloudy

84° 💧 None 💨 11 mph H 53%30.00 inHg

12:00 PM

Partly cloudy

88° 💧 None 💨 11 mph H 43%29.97 inHg

1:00 PM

Partly cloudy

91° 💧 None 💨 11 mph H 38%29.97 inHg

2:00 PM

Overcast

93° 💧 None 💨 10 mph H 37%29.94 inHg

3:00 PM

Overcast

94° 💧 None 💨 11 mph H 35%29.94 inHg

4:00 PM

Overcast

93° 💧 None 💨 11 mph H 36%29.91 inHg

5:00 PM

Overcast

92° 💧 None 💨 12 mph H 36%29.91 inHg

6:00 PM

Overcast

90° 💧 None 💨 14 mph H 38%29.91 inHg

7:00 PM

Overcast

86° 💧 None 💨 13 mph H 46%29.94 inHg

8:00 PM

Overcast night

82° 💧 None 💨 15 mph H 51%29.94 inHg

9:00 PM

Overcast night

81° 💧 None 💨 15 mph H 55%29.97 inHg

10:00 PM

Light rain

76° 💧 0.02 in 💨 7 mph H 69%30.03 inHg

11:00 PM

Overcast night

74° 💧 None 💨 5 mph H 74%30.06 inHg

Monday

12:00 AM

Overcast night

73° 💧 None 💨 6 mph H 76%30.03 inHg

1:00 AM

Overcast night

73° 💧 None 💨 12 mph H 76%30.00 inHg

2:00 AM

Overcast night

73° 💧 None 💨 10 mph H 74%30.00 inHg

3:00 AM

Overcast night

73° 💧 None 💨 11 mph H 74%30.00 inHg

4:00 AM

Overcast night

72° 💧 None 💨 11 mph H 73%30.00 inHg

5:00 AM

Overcast night

72° 💧 None 💨 12 mph H 71%30.03 inHg

6:00 AM

Overcast night

71° 💧 None 💨 12 mph H 71%30.03 inHg

7:00 AM

Overcast

70° 💧 None 💨 10 mph H 71%30.06 inHg

8:00 AM

Overcast

71° 💧 None 💨 10 mph H 68%30.09 inHg

9:00 AM

Overcast

71° 💧 None 💨 10 mph H 66%30.09 inHg

10:00 AM

Overcast

71° 💧 None 💨 10 mph H 63%30.12 inHg

11:00 AM

Overcast

72° 💧 None 💨 10 mph H 57%30.12 inHg

12:00 PM

Overcast

78° 💧 None 💨 10 mph H 46%30.09 inHg

1:00 PM

Overcast

87° 💧 None 💨 9 mph H 33%30.06 inHg

2:00 PM

Sunny

90° 💧 None 💨 9 mph H 29%30.03 inHg

3:00 PM

Sunny

92° 💧 None 💨 10 mph H 27%30.00 inHg

4:00 PM

Sunny

92° 💧 None 💨 11 mph H 27%30.00 inHg

5:00 PM

Sunny

91° 💧 None 💨 12 mph H 27%30.00 inHg

6:00 PM

Sunny

89° 💧 None 💨 13 mph H 28%30.00 inHg

7:00 PM

Sunny

84° 💧 None 💨 12 mph H 32%30.00 inHg

8:00 PM

Clear night

78° 💧 None 💨 11 mph H 39%30.00 inHg

In Mendon and, more broadly, across the state of Illinois: The evening will feature mostly sunny skies with a few clouds passing through. Temperatures will remain hot, ranging from 89 to 92 degrees Fahrenheit. Expect moderate south winds at around 10 mph, with gusts reaching up to 23 mph. No precipitation is anticipated during this time, so it should remain dry throughout the evening and into the early night hours.

15-Day Weather Outlook for Mendon

TomorrowTomorrow

Mostly sunny 99°/78° 💧 None 💨 12 mph

Saturday, Sep 5Sat Sep 5

Light rain 103°/74° 💧 0.04 in 💨 13 mph

Sunday, Sep 6Sun Sep 6

Light rain 94°/70° 💧 0.06 in 💨 15 mph

Monday, Sep 7Mon Sep 7

Overcast 92°/70° 💧 None 💨 13 mph

Tuesday, Sep 8Tue Sep 8

Partly cloudy 105°/66° 💧 None 💨 15 mph

Wednesday, Sep 9Wed Sep 9

Sunny 108°/80° 💧 None 💨 16 mph

Thursday, Sep 10Thu Sep 10

Mostly cloudy 105°/81° 💧 None 💨 13 mph

Friday, Sep 11Fri Sep 11

Mostly cloudy 103°/73° 💧 None 💨 17 mph

Saturday, Sep 12Sat Sep 12

Light rain 107°/68° 💧 0.01 in 💨 13 mph

Sunday, Sep 13Sun Sep 13

Sunny 107°/77° 💧 None 💨 20 mph

Monday, Sep 14Mon Sep 14

Light rain 90°/76° 💧 0.03 in 💨 18 mph

Tuesday, Sep 15Tue Sep 15

Moderate rain 104°/76° 💧 0.48 in 💨 14 mph

Wednesday, Sep 16Wed Sep 16

Sunny 98°/69° 💧 None 💨 12 mph

Thursday, Sep 17Thu Sep 17

Mostly cloudy 100°/77° 💧 None 💨 13 mph

Friday, Sep 18Fri Sep 18

Mostly cloudy 98°/75° 💧 None 💨 15 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Mendon

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Mendon

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 9:00 PM

PM2.5 Fine particles Good 1,8µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 2,1µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 57,0µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 3,2µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Mendon

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 8,4Very high 😊Good

Tomorrow UV 8,1Very high 🙂Fair

Saturday UV 7,7High 🙂Fair

Sunday UV 7,5High 🙂Fair

Monday UV 8,0Very high 😐Moderate

Tuesday UV 10,0Very high —Unavailable

Wednesday UV 9,0Very high —Unavailable

Today's weather health advice Open today's recommendations.

Very high UV risk

Use SPF 50+ sunscreen, a hat and sunglasses. Seek shade and limit exposure around midday.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure.

Best in the morning or late in the day

For walking, running or cycling, prefer the early morning or late afternoon.

WIND OUTLOOK

Hourly Wind Forecast for Mendon

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

Internal PR simulation: 3.66 Population: 1,167

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Forecast data for Mendon were last refreshed today at 8:33 PM. The current forecast period extends through 05/09/2026 at 6:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.