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

Now · 4:44 AM

Mattoon Weather & Hourly Forecast

United States · Wisconsin · 54450

45°F

Mostly clear night

Feels like: 40°F

💧 Humidity 97% 🌡 Pressure 30.47 inHg 💨 Wind 6 mph 👁 Visibility 12.1 mi ☁ Clouds 20% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:43 AM 🌇 Sunset 6:53 PM

Hourly Forecast for Mattoon

Today

5:00 AM

Mostly clear night

45° 💧 None 💨 6 mph H 97%30.47 inHg

8:00 AM

Sunny

47° 💧 None 💨 7 mph H 95%30.50 inHg

11:00 AM

Partly cloudy

59° 💧 None 💨 9 mph H 63%30.50 inHg

2:00 PM

Sunny

63° 💧 None 💨 8 mph H 56%30.45 inHg

5:00 PM

Sunny

61° 💧 None 💨 9 mph H 59%30.42 inHg

8:00 PM

Clear night

51° 💧 None 💨 6 mph H 89%30.42 inHg

11:00 PM

Clear night

48° 💧 None 💨 5 mph H 95%30.45 inHg

Tomorrow

2:00 AM

Partly cloudy night

48° 💧 None 💨 6 mph H 95%30.42 inHg

5:00 AM

Partly cloudy night

47° 💧 None 💨 4 mph H 99%30.42 inHg

8:00 AM

Partly cloudy

51° 💧 0.004 in 💨 5 mph H 98%30.42 inHg

11:00 AM

Overcast

61° 💧 0.002 in 💨 7 mph H 70%30.42 inHg

2:00 PM

Overcast

65° 💧 None 💨 6 mph H 57%30.36 inHg

5:00 PM

Overcast

64° 💧 None 💨 4 mph H 60%30.33 inHg

8:00 PM

Overcast night

57° 💧 None 💨 6 mph H 78%30.33 inHg

11:00 PM

Overcast night

55° 💧 None 💨 3 mph H 88%30.33 inHg

Friday

2:00 AM

Mostly cloudy night

53° 💧 None 💨 1 mph H 90%30.33 inHg

Today

5:00 AM

Mostly clear night

45° 💧 None 💨 6 mph H 97%30.47 inHg

6:00 AM

Clear night

44° 💧 None 💨 6 mph H 98%30.47 inHg

7:00 AM

Sunny

44° 💧 None 💨 6 mph H 98%30.50 inHg

8:00 AM

Sunny

47° 💧 None 💨 7 mph H 95%30.50 inHg

9:00 AM

Sunny

52° 💧 None 💨 6 mph H 87%30.50 inHg

10:00 AM

Partly cloudy

56° 💧 None 💨 9 mph H 73%30.50 inHg

11:00 AM

Partly cloudy

59° 💧 None 💨 9 mph H 63%30.50 inHg

12:00 PM

Sunny

61° 💧 None 💨 8 mph H 60%30.47 inHg

1:00 PM

Sunny

63° 💧 None 💨 8 mph H 57%30.45 inHg

2:00 PM

Sunny

63° 💧 None 💨 8 mph H 56%30.45 inHg

3:00 PM

Sunny

64° 💧 None 💨 8 mph H 55%30.42 inHg

4:00 PM

Sunny

63° 💧 None 💨 9 mph H 56%30.42 inHg

5:00 PM

Sunny

61° 💧 None 💨 9 mph H 59%30.42 inHg

6:00 PM

Sunny

58° 💧 None 💨 8 mph H 67%30.42 inHg

7:00 PM

Clear night

54° 💧 None 💨 7 mph H 79%30.42 inHg

8:00 PM

Clear night

51° 💧 None 💨 6 mph H 89%30.42 inHg

9:00 PM

Clear night

49° 💧 None 💨 6 mph H 93%30.45 inHg

10:00 PM

Clear night

49° 💧 None 💨 6 mph H 94%30.45 inHg

11:00 PM

Clear night

48° 💧 None 💨 5 mph H 95%30.45 inHg

Tomorrow

12:00 AM

Clear night

48° 💧 None 💨 5 mph H 95%30.45 inHg

1:00 AM

Mostly clear night

47° 💧 None 💨 5 mph H 95%30.42 inHg

2:00 AM

Partly cloudy night

48° 💧 None 💨 6 mph H 95%30.42 inHg

3:00 AM

Mostly cloudy night

49° 💧 None 💨 6 mph H 97%30.42 inHg

4:00 AM

Mostly clear night

49° 💧 None 💨 6 mph H 98%30.42 inHg

5:00 AM

Partly cloudy night

47° 💧 None 💨 4 mph H 99%30.42 inHg

6:00 AM

Partly cloudy night

47° 💧 None 💨 4 mph H 100%30.42 inHg

7:00 AM

Mostly cloudy

47° 💧 None 💨 4 mph H 100%30.42 inHg

8:00 AM

Partly cloudy

51° 💧 None 💨 5 mph H 98%30.42 inHg

9:00 AM

Overcast

56° 💧 None 💨 5 mph H 92%30.42 inHg

10:00 AM

Mostly cloudy

59° 💧 0.004 in 💨 5 mph H 81%30.42 inHg

11:00 AM

Overcast

61° 💧 0.002 in 💨 7 mph H 70%30.42 inHg

12:00 PM

Overcast

62° 💧 None 💨 7 mph H 63%30.39 inHg

1:00 PM

Overcast

63° 💧 None 💨 6 mph H 60%30.39 inHg

2:00 PM

Overcast

65° 💧 None 💨 6 mph H 57%30.36 inHg

3:00 PM

Overcast

65° 💧 None 💨 6 mph H 55%30.33 inHg

4:00 PM

Overcast

65° 💧 None 💨 6 mph H 54%30.33 inHg

5:00 PM

Overcast

64° 💧 None 💨 4 mph H 60%30.33 inHg

6:00 PM

Overcast

61° 💧 None 💨 4 mph H 72%30.30 inHg

7:00 PM

Overcast night

58° 💧 None 💨 5 mph H 76%30.33 inHg

8:00 PM

Overcast night

57° 💧 None 💨 6 mph H 78%30.33 inHg

9:00 PM

Overcast night

56° 💧 None 💨 5 mph H 83%30.33 inHg

10:00 PM

Overcast night

56° 💧 None 💨 5 mph H 85%30.33 inHg

11:00 PM

Overcast night

55° 💧 None 💨 3 mph H 88%30.33 inHg

Friday

12:00 AM

Overcast night

54° 💧 None 💨 3 mph H 90%30.33 inHg

1:00 AM

Overcast night

54° 💧 None 💨 1 mph H 89%30.33 inHg

2:00 AM

Mostly cloudy night

53° 💧 None 💨 1 mph H 90%30.33 inHg

3:00 AM

Mostly cloudy night

53° 💧 None 💨 1 mph H 91%30.33 inHg

4:00 AM

Partly cloudy night

53° 💧 None 💨 2 mph H 90%30.33 inHg

5:00 AM

Mostly cloudy night

51° 💧 None 💨 2 mph H 91%30.33 inHg

6:00 AM

Mostly clear night

52° 💧 None 💨 4 mph H 91%30.33 inHg

7:00 AM

Mostly sunny

51° 💧 None 💨 4 mph H 92%30.33 inHg

8:00 AM

Mostly sunny

55° 💧 None 💨 5 mph H 86%30.36 inHg

9:00 AM

Mostly sunny

59° 💧 None 💨 4 mph H 79%30.36 inHg

10:00 AM

Mostly sunny

63° 💧 None 💨 6 mph H 73%30.36 inHg

11:00 AM

Mostly cloudy

65° 💧 0.001 in 💨 7 mph H 67%30.33 inHg

12:00 PM

Mostly cloudy

67° 💧 0.002 in 💨 6 mph H 60%30.33 inHg

1:00 PM

Mostly cloudy

67° 💧 None 💨 6 mph H 58%30.33 inHg

2:00 PM

Partly cloudy

68° 💧 None 💨 6 mph H 54%30.30 inHg

3:00 PM

Mostly cloudy

68° 💧 None 💨 6 mph H 54%30.27 inHg

4:00 PM

Mostly cloudy

68° 💧 None 💨 5 mph H 55%30.27 inHg

5:00 PM

Partly cloudy

67° 💧 None 💨 4 mph H 57%30.27 inHg

6:00 PM

Mostly sunny

65° 💧 None 💨 3 mph H 70%30.27 inHg

7:00 PM

Mostly clear night

59° 💧 None 💨 5 mph H 80%30.27 inHg

10:00 PM

Clear night

54° 💧 None 💨 4 mph H 88%30.30 inHg

Saturday

1:00 AM

Clear night

49° 💧 None 💨 3 mph H 92%30.30 inHg

4:00 AM

Mostly clear night

48° 💧 None 💨 2 mph H 91%30.27 inHg

7:00 AM

Sunny

47° 💧 None 💨 3 mph H 91%30.27 inHg

10:00 AM

Mostly sunny

61° 💧 None 💨 7 mph H 73%30.27 inHg

1:00 PM

Partly cloudy

66° 💧 None 💨 8 mph H 55%30.24 inHg

4:00 PM

Mostly cloudy

65° 💧 None 💨 7 mph H 59%30.18 inHg

7:00 PM

Overcast night

57° 💧 None 💨 6 mph H 82%30.15 inHg

10:00 PM

Overcast night

53° 💧 None 💨 6 mph H 93%30.18 inHg

Sunday

1:00 AM

Mostly cloudy night

49° 💧 None 💨 4 mph H 95%30.18 inHg

4:00 AM

Mostly cloudy night

48° 💧 None 💨 4 mph H 97%30.18 inHg

7:00 AM

Overcast

48° 💧 None 💨 1 mph H 100%30.15 inHg

10:00 AM

Overcast

59° 💧 None 💨 3 mph H 84%30.18 inHg

1:00 PM

Mostly cloudy

66° 💧 None 💨 5 mph H 57%30.12 inHg

4:00 PM

Mostly cloudy

67° 💧 None 💨 4 mph H 55%30.09 inHg

7:00 PM

Mostly clear night

59° 💧 None 💨 4 mph H 80%30.06 inHg

10:00 PM

Mostly cloudy night

56° 💧 None 💨 4 mph H 85%30.06 inHg

Monday

1:00 AM

Overcast night

58° 💧 None 💨 3 mph H 83%30.06 inHg

4:00 AM

Overcast night

57° 💧 None 💨 2 mph H 88%30.03 inHg

7:00 AM

Overcast

56° 💧 None 💨 2 mph H 93%30.03 inHg

10:00 AM

Overcast

58° 💧 None 💨 2 mph H 93%30.03 inHg

1:00 PM

Overcast

62° 💧 None 💨 4 mph H 85%30.00 inHg

4:00 PM

Mostly cloudy

64° 💧 None 💨 5 mph H 76%29.94 inHg

7:00 PM

Overcast night

61° 💧 None 💨 3 mph H 83%29.91 inHg

Tuesday

1:00 AM

Overcast night

55° 💧 None 💨 5 mph H 91%29.88 inHg

7:00 AM

Partly cloudy

52° 💧 None 💨 4 mph H 96%29.88 inHg

1:00 PM

Overcast

66° 💧 None 💨 6 mph H 66%29.80 inHg

7:00 PM

Moderate rain

61° 💧 None 💨 1 mph H 87%29.74 inHg

Wednesday

1:00 AM

Heavy rain

58° 💧 None 💨 4 mph H 100%29.68 inHg

7:00 AM

Overcast

54° 💧 None 💨 12 mph H 98%29.68 inHg

1:00 PM

Mostly cloudy

61° 💧 None 💨 12 mph H 66%29.74 inHg

7:00 PM

Clear night

54° 💧 None 💨 6 mph H 76%29.80 inHg

Thursday

1:00 AM

Mostly clear night

48° 💧 None 💨 7 mph H 80%29.83 inHg

7:00 AM

Overcast

49° 💧 None 💨 9 mph H 83%29.80 inHg

1:00 PM

Overcast

55° 💧 None 💨 9 mph H 57%29.74 inHg

7:00 PM

Overcast night

50° 💧 None 💨 9 mph H 57%29.83 inHg

Friday

1:00 AM

Overcast night

46° 💧 None 💨 7 mph H 74%29.88 inHg

7:00 AM

Overcast

43° 💧 None 💨 8 mph H 84%29.94 inHg

1:00 PM

Mostly cloudy

50° 💧 None 💨 10 mph H 55%30.00 inHg

7:00 PM

Overcast night

48° 💧 None 💨 6 mph H 58%30.03 inHg

Saturday

1:00 AM

Partly cloudy night

42° 💧 None 💨 5 mph H 71%30.09 inHg

7:00 AM

Mostly sunny

40° 💧 None 💨 6 mph H 74%30.18 inHg

1:00 PM

Mostly cloudy

53° 💧 None 💨 6 mph H 43%30.18 inHg

7:00 PM

Mostly cloudy night

46° 💧 None 💨 4 mph H 68%30.15 inHg

Sunday

1:00 AM

Partly cloudy night

40° 💧 None 💨 5 mph H 85%30.18 inHg

7:00 AM

Overcast

42° 💧 None 💨 5 mph H 86%30.18 inHg

1:00 PM

Overcast

62° 💧 None 💨 8 mph H 56%30.12 inHg

7:00 PM

Overcast night

58° 💧 None 💨 6 mph H 73%30.03 inHg

Monday

1:00 AM

Partly cloudy night

52° 💧 None 💨 7 mph H 98%30.00 inHg

7:00 AM

Overcast

52° 💧 None 💨 6 mph H 99%30.00 inHg

1:00 PM

Partly cloudy

67° 💧 None 💨 7 mph H 61%29.97 inHg

7:00 PM

Partly cloudy night

60° 💧 None 💨 8 mph H 83%29.85 inHg

Tuesday

1:00 AM

Mostly cloudy night

62° 💧 None 💨 12 mph H 88%29.80 inHg

7:00 AM

Sunny

55° 💧 None 💨 12 mph H 67%29.85 inHg

1:00 PM

Sunny

61° 💧 None 💨 17 mph H 36%29.88 inHg

7:00 PM

Clear night

55° 💧 None 💨 14 mph H 37%29.91 inHg

Wednesday

1:00 AM

Clear night

47° 💧 None 💨 11 mph H 59%30.00 inHg

7:00 AM

Overcast

45° 💧 None 💨 12 mph H 72%30.03 inHg

1:00 PM

Mostly sunny

48° 💧 None 💨 13 mph H 68%30.06 inHg

7:00 PM

Mostly clear night

45° 💧 None 💨 10 mph H 63%30.06 inHg

In Mattoon and, more broadly, across the state of Wisconsin: This morning will begin with mostly cloudy skies and cool temperatures ranging from 49 to 58 degrees Fahrenheit. The wind will be coming from the east at a moderate pace, reaching up to 12 mph, with gusts that could hit around 25 mph. As the day progresses into the afternoon, skies will remain mostly cloudy, but no precipitation is expected, keeping conditions dry. Temperatures are expected to stay steady within the same cool range, with wind speeds continuing from the east at similar levels. Overall, it will be a cool and breezy day with mostly cloudy skies and no significant weather concerns.

15-Day Weather Outlook for Mattoon

TomorrowTomorrow

Mostly sunny 65°/47° 💧 None 💨 7 mph

Friday, Sep 25Fri Sep 25

Overcast 68°/51° 💧 0.008 in 💨 7 mph

Saturday, Sep 26Sat Sep 26

Mostly sunny 66°/47° 💧 0.001 in 💨 8 mph

Sunday, Sep 27Sun Sep 27

Mostly cloudy 67°/48° 💧 None 💨 5 mph

Monday, Sep 28Mon Sep 28

Overcast 64°/56° 💧 0.041 in 💨 5 mph

Tuesday, Sep 29Tue Sep 29

Moderate rain 66°/52° 💧 0.069 in 💨 6 mph

Wednesday, Sep 30Wed Sep 30

Heavy rain 61°/54° 💧 0.519 in 💨 12 mph

Thursday, Oct 1Thu Oct 1

Mostly sunny 55°/48° 💧 None 💨 9 mph

Friday, Oct 2Fri Oct 2

Mostly cloudy 50°/43° 💧 0.007 in 💨 10 mph

Saturday, Oct 3Sat Oct 3

Partly cloudy 53°/40° 💧 None 💨 6 mph

Sunday, Oct 4Sun Oct 4

Partly cloudy 62°/40° 💧 0.002 in 💨 8 mph

Monday, Oct 5Mon Oct 5

Partly cloudy 67°/52° 💧 0.013 in 💨 8 mph

Tuesday, Oct 6Tue Oct 6

Mostly cloudy 62°/55° 💧 0.001 in 💨 17 mph

Wednesday, Oct 7Wed Oct 7

Mostly sunny 48°/45° 💧 0.047 in 💨 13 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Mattoon

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Mattoon

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 5:00 AM

PM2.5 Fine particles Good 1,2µg/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 1,7µg/m³

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

O₃ Ozone Good 45,5µg/m³

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

NO₂ Nitrogen dioxide Good 2,6µg/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 Mattoon

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 4,9Moderate 😊Good

Tomorrow UV 3,8Moderate 🙂Fair

Friday UV 4,9Moderate 🙂Fair

Saturday UV 4,2Moderate 😐Moderate

Sunday UV 5,0Moderate 🙂Fair

Monday UV 6,0High —Unavailable

Tuesday UV 6,0High —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,3 9:00 AMUV 1,0 10:00 AMUV 2,2 11:00 AMUV 3,5 12:00 PMUV 4,6 1:00 PMUV 4,9 2:00 PMUV 4,4 3:00 PMUV 3,3 4:00 PMUV 2,0 5:00 PMUV 0,9 6:00 PMUV 0,2

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

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Good air quality

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

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Mattoon

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · MATTOON, WISCONSIN

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

80/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 8:32 PM–5:06 AM

☁ Cloud cover 20% Real hourly forecast for the best viewing hour.

☾ Moonlight 89% Waxing Gibbous · Moon below the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 59° high at the best hour.

✦ Estimated visible meteors 1–3/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min63%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

ACTIVE NOW

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Mattoon were last refreshed today at 4:44 AM. The current forecast period extends through 25/09/2026 at 2:00 AM. 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.