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Current weather in Exeter is broken clouds.

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

Now · 10:25 AM

Exeter Weather & Hourly Forecast

United States · Illinois · 62621

78°F

Mostly cloudy

Feels like: 77°F

💧 Humidity 58% 🌡 Pressure 30.12 inHg 💨 Wind 8 mph 👁 Visibility 22.1 mi ☁ Clouds 90% ☀️ UV index 3.4 · Moderate 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Exeter

Today

11:00 AM

Mostly cloudy

81° 💧 None 💨 8 mph H 52%30.09 inHg

2:00 PM

Partly cloudy

89° 💧 None 💨 7 mph H 43%30.06 inHg

5:00 PM

Sunny

90° 💧 None 💨 8 mph H 46%30.00 inHg

8:00 PM

Clear night

82° 💧 None 💨 8 mph H 57%30.00 inHg

11:00 PM

Clear night

80° 💧 None 💨 9 mph H 56%30.03 inHg

Tomorrow

2:00 AM

Clear night

78° 💧 None 💨 9 mph H 56%30.00 inHg

5:00 AM

Clear night

77° 💧 None 💨 10 mph H 63%30.00 inHg

8:00 AM

Sunny

79° 💧 0.012 in 💨 9 mph H 64%30.03 inHg

11:00 AM

Sunny

88° 💧 None 💨 6 mph H 52%30.03 inHg

2:00 PM

Light thunderstorms

91° 💧 0.016 in 💨 9 mph H 50%30.00 inHg

5:00 PM

Partly cloudy

89° 💧 0.001 in 💨 4 mph H 54%29.94 inHg

8:00 PM

Mostly cloudy night

83° 💧 0.215 in 💨 6 mph H 71%29.94 inHg

11:00 PM

Thunderstorms

75° 💧 0.504 in 💨 2 mph H 96%30.00 inHg

Thursday

2:00 AM

Thunderstorms

74° 💧 0.336 in 💨 2 mph H 97%29.97 inHg

5:00 AM

Light thunderstorms

72° 💧 0.035 in 💨 5 mph H 98%29.97 inHg

8:00 AM

Light rain

72° 💧 0.038 in 💨 3 mph H 97%29.97 inHg

Today

11:00 AM

Mostly cloudy

81° 💧 None 💨 8 mph H 52%30.09 inHg

12:00 PM

Mostly sunny

84° 💧 None 💨 7 mph H 49%30.09 inHg

1:00 PM

Mostly sunny

87° 💧 None 💨 7 mph H 45%30.06 inHg

2:00 PM

Partly cloudy

89° 💧 None 💨 7 mph H 43%30.06 inHg

3:00 PM

Partly cloudy

90° 💧 None 💨 8 mph H 42%30.03 inHg

4:00 PM

Mostly sunny

90° 💧 None 💨 8 mph H 43%30.00 inHg

5:00 PM

Sunny

90° 💧 None 💨 8 mph H 46%30.00 inHg

6:00 PM

Sunny

88° 💧 None 💨 7 mph H 52%30.00 inHg

7:00 PM

Sunny

84° 💧 None 💨 7 mph H 57%30.00 inHg

8:00 PM

Clear night

82° 💧 None 💨 8 mph H 57%30.00 inHg

9:00 PM

Clear night

81° 💧 None 💨 8 mph H 57%30.03 inHg

10:00 PM

Clear night

81° 💧 None 💨 8 mph H 57%30.03 inHg

11:00 PM

Clear night

80° 💧 None 💨 9 mph H 56%30.03 inHg

Tomorrow

12:00 AM

Clear night

79° 💧 None 💨 9 mph H 55%30.00 inHg

1:00 AM

Clear night

78° 💧 None 💨 10 mph H 56%30.00 inHg

2:00 AM

Clear night

78° 💧 None 💨 9 mph H 56%30.00 inHg

3:00 AM

Clear night

77° 💧 None 💨 9 mph H 58%30.00 inHg

4:00 AM

Clear night

77° 💧 None 💨 9 mph H 60%30.00 inHg

5:00 AM

Clear night

77° 💧 None 💨 10 mph H 63%30.00 inHg

6:00 AM

Clear night

77° 💧 None 💨 8 mph H 64%30.00 inHg

7:00 AM

Sunny

77° 💧 None 💨 9 mph H 66%30.00 inHg

8:00 AM

Sunny

79° 💧 None 💨 9 mph H 64%30.03 inHg

9:00 AM

Light rain

82° 💧 0.006 in 💨 5 mph H 63%30.06 inHg

10:00 AM

Light rain

84° 💧 0.006 in 💨 4 mph H 60%30.03 inHg

11:00 AM

Sunny

88° 💧 None 💨 6 mph H 52%30.03 inHg

12:00 PM

Mostly sunny

90° 💧 None 💨 5 mph H 49%30.00 inHg

1:00 PM

Mostly sunny

92° 💧 None 💨 7 mph H 47%30.00 inHg

2:00 PM

Light thunderstorms

91° 💧 0.009 in 💨 9 mph H 50%30.00 inHg

3:00 PM

Mostly cloudy

91° 💧 0.001 in 💨 8 mph H 51%29.97 inHg

4:00 PM

Light thunderstorms

89° 💧 0.006 in 💨 7 mph H 55%29.97 inHg

5:00 PM

Partly cloudy

89° 💧 0.000 in 💨 4 mph H 54%29.94 inHg

6:00 PM

Partly cloudy

88° 💧 0.001 in 💨 4 mph H 57%29.94 inHg

7:00 PM

Overcast

85° 💧 None 💨 5 mph H 65%29.94 inHg

8:00 PM

Mostly cloudy night

83° 💧 None 💨 6 mph H 71%29.94 inHg

9:00 PM

Thunderstorms

77° 💧 0.172 in 💨 3 mph H 92%30.00 inHg

10:00 PM

Light thunderstorms

76° 💧 0.044 in 💨 5 mph H 95%29.97 inHg

11:00 PM

Thunderstorms

75° 💧 0.181 in 💨 2 mph H 96%30.00 inHg

Thursday

12:00 AM

Thunderstorms

75° 💧 0.102 in 💨 3 mph H 97%29.97 inHg

1:00 AM

Thunderstorms

74° 💧 0.221 in 💨 2 mph H 98%30.00 inHg

2:00 AM

Thunderstorms

74° 💧 0.172 in 💨 2 mph H 97%29.97 inHg

3:00 AM

Thunderstorms

73° 💧 0.099 in 💨 4 mph H 98%29.94 inHg

4:00 AM

Light thunderstorms

72° 💧 0.065 in 💨 3 mph H 98%29.97 inHg

5:00 AM

Light thunderstorms

72° 💧 0.007 in 💨 5 mph H 98%29.97 inHg

6:00 AM

Light rain

72° 💧 0.017 in 💨 4 mph H 98%29.97 inHg

7:00 AM

Light rain

72° 💧 0.011 in 💨 3 mph H 98%29.97 inHg

8:00 AM

Light rain

72° 💧 0.026 in 💨 3 mph H 97%29.97 inHg

9:00 AM

Light rain

72° 💧 0.008 in 💨 2 mph H 98%30.00 inHg

10:00 AM

Light rain

74° 💧 0.004 in 💨 6 mph H 92%30.00 inHg

11:00 AM

Light rain

78° 💧 0.006 in 💨 9 mph H 77%30.00 inHg

12:00 PM

Mostly cloudy

80° 💧 0.001 in 💨 8 mph H 66%30.00 inHg

1:00 PM

Overcast

82° 💧 None 💨 8 mph H 58%29.97 inHg

2:00 PM

Overcast

83° 💧 None 💨 8 mph H 54%29.97 inHg

3:00 PM

Overcast

82° 💧 None 💨 8 mph H 54%29.94 inHg

4:00 PM

Mostly sunny

82° 💧 None 💨 8 mph H 55%29.94 inHg

5:00 PM

Sunny

81° 💧 None 💨 8 mph H 55%29.94 inHg

6:00 PM

Partly cloudy

79° 💧 None 💨 7 mph H 60%29.94 inHg

7:00 PM

Mostly cloudy

75° 💧 None 💨 5 mph H 68%29.94 inHg

Friday

4:00 AM

Clear night

64° 💧 None 💨 4 mph H 84%30.00 inHg

7:00 AM

Sunny

62° 💧 None 💨 3 mph H 89%30.00 inHg

10:00 AM

Sunny

74° 💧 None 💨 4 mph H 70%29.97 inHg

1:00 PM

Sunny

81° 💧 None 💨 7 mph H 56%29.94 inHg

4:00 PM

Sunny

82° 💧 None 💨 5 mph H 53%29.88 inHg

7:00 PM

Sunny

76° 💧 None 💨 3 mph H 75%29.85 inHg

10:00 PM

Clear night

71° 💧 None 💨 7 mph H 82%29.85 inHg

Saturday

1:00 AM

Mostly cloudy night

68° 💧 None 💨 5 mph H 87%29.85 inHg

4:00 AM

Mostly cloudy night

69° 💧 None 💨 8 mph H 91%29.83 inHg

7:00 AM

Partly cloudy

70° 💧 None 💨 5 mph H 94%29.83 inHg

10:00 AM

Heavy rain

75° 💧 None 💨 7 mph H 85%29.94 inHg

1:00 PM

Light rain

77° 💧 None 💨 9 mph H 85%29.91 inHg

4:00 PM

Overcast

80° 💧 None 💨 5 mph H 74%29.91 inHg

7:00 PM

Mostly cloudy

78° 💧 None 💨 1 mph H 83%29.91 inHg

10:00 PM

Clear night

73° 💧 None 💨 3 mph H 92%29.97 inHg

Sunday

1:00 AM

Clear night

71° 💧 None 💨 2 mph H 97%30.00 inHg

4:00 AM

Mostly cloudy night

69° 💧 None 💨 1 mph H 100%30.00 inHg

7:00 AM

Overcast

69° 💧 None 💨 5 mph H 100%30.03 inHg

10:00 AM

Overcast

77° 💧 None 💨 5 mph H 83%30.06 inHg

1:00 PM

Light rain

83° 💧 None 💨 3 mph H 68%30.03 inHg

4:00 PM

Mostly sunny

87° 💧 None 💨 5 mph H 60%29.94 inHg

7:00 PM

Mostly sunny

81° 💧 None 💨 3 mph H 77%29.94 inHg

10:00 PM

Clear night

78° 💧 None 💨 6 mph H 84%29.97 inHg

Monday

1:00 AM

Clear night

78° 💧 None 💨 10 mph H 82%29.94 inHg

7:00 AM

Partly cloudy

71° 💧 None 💨 7 mph H 71%30.03 inHg

1:00 PM

Partly cloudy

71° 💧 None 💨 7 mph H 89%30.03 inHg

7:00 PM

Overcast

89° 💧 None 💨 10 mph H 65%29.94 inHg

Tuesday

1:00 AM

Partly cloudy night

86° 💧 None 💨 10 mph H 67%29.83 inHg

7:00 AM

Mostly cloudy

81° 💧 None 💨 8 mph H 69%29.91 inHg

1:00 PM

Mostly cloudy

74° 💧 None 💨 3 mph H 96%30.03 inHg

7:00 PM

Mostly cloudy

82° 💧 None 💨 6 mph H 56%30.09 inHg

Wednesday

1:00 AM

Partly cloudy night

77° 💧 None 💨 5 mph H 61%30.12 inHg

7:00 AM

Sunny

69° 💧 None 💨 5 mph H 76%30.18 inHg

1:00 PM

Mostly cloudy

68° 💧 None 💨 7 mph H 77%30.24 inHg

7:00 PM

Light rain

72° 💧 None 💨 6 mph H 92%30.21 inHg

Thursday

1:00 AM

Mostly clear night

77° 💧 None 💨 8 mph H 83%30.18 inHg

7:00 AM

Partly cloudy

72° 💧 None 💨 6 mph H 89%30.18 inHg

1:00 PM

Overcast

72° 💧 None 💨 3 mph H 98%30.15 inHg

7:00 PM

Light rain

82° 💧 None 💨 4 mph H 76%30.12 inHg

Friday

1:00 AM

Overcast night

70° 💧 None 💨 13 mph H 87%30.21 inHg

7:00 AM

Sunny

64° 💧 None 💨 11 mph H 79%30.33 inHg

1:00 PM

Sunny

58° 💧 None 💨 11 mph H 86%30.45 inHg

7:00 PM

Mostly sunny

67° 💧 None 💨 9 mph H 55%30.45 inHg

Saturday

1:00 AM

Clear night

62° 💧 None 💨 7 mph H 62%30.36 inHg

7:00 AM

Sunny

54° 💧 None 💨 4 mph H 79%30.39 inHg

1:00 PM

Sunny

49° 💧 None 💨 4 mph H 86%30.36 inHg

7:00 PM

Sunny

67° 💧 None 💨 6 mph H 49%30.27 inHg

Sunday

1:00 AM

Clear night

63° 💧 None 💨 3 mph H 68%30.15 inHg

7:00 AM

Partly cloudy

56° 💧 None 💨 8 mph H 73%30.12 inHg

1:00 PM

Sunny

52° 💧 None 💨 6 mph H 81%30.12 inHg

7:00 PM

Partly cloudy

74° 💧 None 💨 7 mph H 47%30.09 inHg

Monday

1:00 AM

Mostly clear night

68° 💧 None 💨 5 mph H 60%30.03 inHg

7:00 AM

Overcast

63° 💧 None 💨 7 mph H 61%30.03 inHg

1:00 PM

Overcast

65° 💧 None 💨 5 mph H 62%30.06 inHg

7:00 PM

Overcast

78° 💧 None 💨 7 mph H 58%30.06 inHg

Tuesday

1:00 AM

Overcast night

75° 💧 None 💨 8 mph H 57%30.06 inHg

7:00 AM

Overcast

66° 💧 None 💨 4 mph H 75%30.12 inHg

1:00 PM

Overcast

58° 💧 None 💨 4 mph H 87%30.15 inHg

7:00 PM

Partly cloudy

75° 💧 None 💨 4 mph H 45%30.12 inHg

Wednesday

1:00 AM

Overcast night

69° 💧 None 💨 4 mph H 64%30.03 inHg

In Exeter and, more broadly, across the state of Illinois: The rest of the day will feature a mix of sun and clouds, with temperatures rising to a high between 78 and 88 degrees Fahrenheit. Winds will be light from the south, with speeds up to 9 mph and gusts reaching 17 mph. No precipitation is expected, so outdoor plans should be comfortable. Be mindful that the warm temperatures combined with the gentle breeze may feel quite warm later in the afternoon. It’s a good idea to stay hydrated and wear sun protection if you’re spending time outside. Conditions will remain fairly stable, with no significant changes expected through the evening.

15-Day Weather Outlook for Exeter

TomorrowTomorrow

Light thunderstorms 92°/77° 💧 None 💨 10 mph

Thursday, Sep 10Thu Sep 10

Thunderstorms 85°/72° 💧 None 💨 9 mph

Friday, Sep 11Fri Sep 11

Mostly cloudy 82°/62° 💧 0.485 in 💨 7 mph

Saturday, Sep 12Sat Sep 12

Heavy rain 80°/68° 💧 0.142 in 💨 9 mph

Sunday, Sep 13Sun Sep 13

Light rain 87°/69° 💧 0.036 in 💨 5 mph

Monday, Sep 14Mon Sep 14

Mostly sunny 81°/71° 💧 0.384 in 💨 10 mph

Tuesday, Sep 15Tue Sep 15

Mostly cloudy 89°/74° 💧 0.116 in 💨 10 mph

Wednesday, Sep 16Wed Sep 16

Mostly cloudy 82°/68° 💧 0.004 in 💨 7 mph

Thursday, Sep 17Thu Sep 17

Light rain 77°/72° 💧 0.405 in 💨 8 mph

Friday, Sep 18Fri Sep 18

Light rain 82°/58° 💧 0.323 in 💨 13 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 67°/49° 💧 None 💨 9 mph

Sunday, Sep 20Sun Sep 20

Partly cloudy 67°/52° 💧 None 💨 8 mph

Monday, Sep 21Mon Sep 21

Partly cloudy 74°/63° 💧 None 💨 7 mph

Tuesday, Sep 22Tue Sep 22

Overcast 78°/58° 💧 0.001 in 💨 8 mph

Wednesday, Sep 23Wed Sep 23

Partly cloudy 75°/69° 💧 None 💨 4 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Exeter

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Exeter

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 11:00 AM

PM2.5 Fine particles Fair 10,8µg/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 11,7µg/m³

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

O₃ Ozone Fair 84,6µg/m³

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

NO₂ Nitrogen dioxide Good 1,6µg/m³

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

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Exeter

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 7,8High 🙂Fair

Tomorrow UV 7,2High 🙂Fair

Thursday UV 4,7Moderate 😊Good

Friday UV 6,9High 🙂Fair

Saturday UV 8,0Very high 😊Good

Sunday UV 6,0High —Unavailable

Monday UV 9,0Very high —Unavailable

Hourly UV index today

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

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

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

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 Exeter

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · EXETER, ILLINOIS

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 3:00 AM–4:00 AM.

99/100Best-hour score

BEST TIME TONIGHT 3:00 AM–4:00 AM Astronomical darkness: 8:55 PM–5:05 AM

☁ Cloud cover 2% Real hourly forecast for the best viewing hour.

☾ Moonlight 7% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 67° high at the best hour.

✦ Estimated visible meteors 2–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min78%

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

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

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

UPCOMING

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

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 Exeter were last refreshed today at 10:24 AM. The current forecast period extends through 10/09/2026 at 8:00 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.