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Current weather in Geneseo is overcast clouds.

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

Now · 9:34 PM

Geneseo Weather & Hourly Forecast

United States · Illinois · 61254

75°F

Overcast night

Feels like: 75°F

💧 Humidity 68% 🌡 Pressure 30.09 inHg 💨 Wind 8 mph 👁 Visibility 20.8 mi ☁ Clouds 100% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Geneseo

Today

10:00 PM

Overcast night

73° 💧 None 💨 9 mph H 69%30.09 inHg

Tomorrow

1:00 AM

Clear night

67° 💧 None 💨 8 mph H 70%30.12 inHg

4:00 AM

Mostly clear night

64° 💧 None 💨 5 mph H 86%30.15 inHg

7:00 AM

Partly cloudy

62° 💧 None 💨 6 mph H 93%30.15 inHg

10:00 AM

Sunny

73° 💧 None 💨 8 mph H 63%30.15 inHg

1:00 PM

Mostly sunny

81° 💧 None 💨 9 mph H 43%30.15 inHg

4:00 PM

Partly cloudy

82° 💧 None 💨 9 mph H 42%30.09 inHg

7:00 PM

Partly cloudy

77° 💧 None 💨 7 mph H 54%30.06 inHg

10:00 PM

Mostly cloudy night

70° 💧 None 💨 8 mph H 70%30.12 inHg

Tuesday

1:00 AM

Overcast night

67° 💧 None 💨 8 mph H 76%30.09 inHg

4:00 AM

Overcast night

65° 💧 None 💨 6 mph H 75%30.09 inHg

7:00 AM

Partly cloudy

64° 💧 None 💨 6 mph H 79%30.09 inHg

10:00 AM

Overcast

77° 💧 None 💨 8 mph H 57%30.09 inHg

1:00 PM

Mostly cloudy

87° 💧 None 💨 11 mph H 38%30.03 inHg

4:00 PM

Sunny

90° 💧 None 💨 10 mph H 37%29.97 inHg

7:00 PM

Sunny

85° 💧 None 💨 10 mph H 45%29.97 inHg

Today

10:00 PM

Overcast night

73° 💧 None 💨 9 mph H 69%30.09 inHg

11:00 PM

Overcast night

71° 💧 None 💨 9 mph H 70%30.09 inHg

Tomorrow

12:00 AM

Mostly cloudy night

69° 💧 None 💨 8 mph H 68%30.12 inHg

1:00 AM

Clear night

67° 💧 None 💨 8 mph H 70%30.12 inHg

2:00 AM

Mostly clear night

65° 💧 None 💨 7 mph H 76%30.12 inHg

3:00 AM

Clear night

64° 💧 None 💨 6 mph H 81%30.12 inHg

4:00 AM

Mostly clear night

64° 💧 None 💨 5 mph H 86%30.15 inHg

5:00 AM

Clear night

63° 💧 None 💨 6 mph H 90%30.15 inHg

6:00 AM

Clear night

62° 💧 None 💨 5 mph H 93%30.15 inHg

7:00 AM

Partly cloudy

62° 💧 None 💨 6 mph H 93%30.15 inHg

8:00 AM

Mostly cloudy

65° 💧 None 💨 6 mph H 84%30.15 inHg

9:00 AM

Mostly sunny

69° 💧 None 💨 7 mph H 74%30.15 inHg

10:00 AM

Sunny

73° 💧 None 💨 8 mph H 63%30.15 inHg

11:00 AM

Mostly sunny

77° 💧 None 💨 9 mph H 51%30.15 inHg

12:00 PM

Mostly cloudy

79° 💧 None 💨 9 mph H 45%30.15 inHg

1:00 PM

Mostly sunny

81° 💧 None 💨 9 mph H 43%30.15 inHg

2:00 PM

Mostly sunny

82° 💧 None 💨 8 mph H 42%30.12 inHg

3:00 PM

Mostly sunny

82° 💧 None 💨 8 mph H 42%30.09 inHg

4:00 PM

Partly cloudy

82° 💧 None 💨 9 mph H 42%30.09 inHg

5:00 PM

Overcast

81° 💧 None 💨 9 mph H 44%30.06 inHg

6:00 PM

Mostly cloudy

79° 💧 None 💨 9 mph H 48%30.06 inHg

7:00 PM

Partly cloudy

77° 💧 None 💨 7 mph H 54%30.06 inHg

8:00 PM

Mostly clear night

73° 💧 None 💨 6 mph H 62%30.09 inHg

9:00 PM

Clear night

71° 💧 None 💨 7 mph H 68%30.09 inHg

10:00 PM

Mostly cloudy night

70° 💧 None 💨 8 mph H 70%30.12 inHg

11:00 PM

Partly cloudy night

69° 💧 None 💨 8 mph H 73%30.12 inHg

Tuesday

12:00 AM

Mostly cloudy night

68° 💧 None 💨 7 mph H 76%30.12 inHg

1:00 AM

Overcast night

67° 💧 None 💨 8 mph H 76%30.09 inHg

2:00 AM

Overcast night

67° 💧 None 💨 8 mph H 74%30.09 inHg

3:00 AM

Overcast night

66° 💧 None 💨 7 mph H 74%30.09 inHg

4:00 AM

Overcast night

65° 💧 None 💨 6 mph H 75%30.09 inHg

5:00 AM

Overcast night

64° 💧 None 💨 6 mph H 78%30.09 inHg

6:00 AM

Partly cloudy night

64° 💧 None 💨 7 mph H 79%30.09 inHg

7:00 AM

Partly cloudy

64° 💧 None 💨 6 mph H 79%30.09 inHg

8:00 AM

Overcast

68° 💧 None 💨 8 mph H 73%30.09 inHg

9:00 AM

Overcast

72° 💧 None 💨 7 mph H 64%30.09 inHg

10:00 AM

Overcast

77° 💧 None 💨 8 mph H 57%30.09 inHg

11:00 AM

Sunny

81° 💧 None 💨 10 mph H 47%30.06 inHg

12:00 PM

Mostly sunny

85° 💧 None 💨 10 mph H 41%30.06 inHg

1:00 PM

Mostly cloudy

87° 💧 None 💨 11 mph H 38%30.03 inHg

2:00 PM

Mostly sunny

89° 💧 None 💨 10 mph H 36%30.00 inHg

3:00 PM

Sunny

90° 💧 None 💨 11 mph H 36%30.00 inHg

4:00 PM

Sunny

90° 💧 None 💨 10 mph H 37%29.97 inHg

5:00 PM

Sunny

90° 💧 None 💨 12 mph H 38%29.97 inHg

6:00 PM

Sunny

88° 💧 None 💨 11 mph H 41%29.97 inHg

7:00 PM

Sunny

85° 💧 None 💨 10 mph H 45%29.97 inHg

8:00 PM

Mostly clear night

82° 💧 None 💨 9 mph H 49%29.97 inHg

9:00 PM

Partly cloudy night

81° 💧 None 💨 10 mph H 49%29.97 inHg

10:00 PM

Overcast night

81° 💧 None 💨 11 mph H 48%29.97 inHg

11:00 PM

Overcast night

81° 💧 None 💨 11 mph H 47%29.97 inHg

Wednesday

12:00 AM

Overcast night

80° 💧 None 💨 11 mph H 44%29.94 inHg

1:00 AM

Overcast night

80° 💧 None 💨 11 mph H 44%29.94 inHg

2:00 AM

Mostly cloudy night

80° 💧 None 💨 11 mph H 44%29.94 inHg

3:00 AM

Light thunderstorms

77° 💧 0.015 in 💨 8 mph H 53%29.94 inHg

4:00 AM

Light thunderstorms

75° 💧 0.054 in 💨 1 mph H 73%29.94 inHg

5:00 AM

Overcast night

74° 💧 0.001 in 💨 2 mph H 76%29.97 inHg

6:00 AM

Overcast night

72° 💧 0.002 in 💨 2 mph H 84%29.97 inHg

7:00 AM

Light thunderstorms

70° 💧 0.049 in 💨 6 mph H 89%29.97 inHg

4:00 PM

Overcast

76° 💧 None 💨 6 mph H 95%29.97 inHg

7:00 PM

Mostly cloudy

75° 💧 None 💨 3 mph H 91%29.97 inHg

10:00 PM

Clear night

71° 💧 None 💨 5 mph H 94%29.97 inHg

Thursday

1:00 AM

Mostly clear night

68° 💧 None 💨 8 mph H 89%30.00 inHg

4:00 AM

Clear night

64° 💧 None 💨 6 mph H 89%30.00 inHg

7:00 AM

Sunny

62° 💧 None 💨 5 mph H 91%30.03 inHg

10:00 AM

Sunny

71° 💧 None 💨 5 mph H 68%30.06 inHg

1:00 PM

Sunny

77° 💧 None 💨 7 mph H 48%30.03 inHg

4:00 PM

Sunny

78° 💧 None 💨 7 mph H 47%29.97 inHg

7:00 PM

Sunny

72° 💧 None 💨 3 mph H 63%29.97 inHg

10:00 PM

Clear night

66° 💧 None 💨 1 mph H 77%29.97 inHg

Friday

1:00 AM

Clear night

61° 💧 None 💨 4 mph H 85%29.97 inHg

4:00 AM

Clear night

59° 💧 None 💨 3 mph H 86%29.97 inHg

7:00 AM

Sunny

60° 💧 None 💨 7 mph H 85%29.97 inHg

10:00 AM

Sunny

74° 💧 None 💨 8 mph H 58%29.91 inHg

1:00 PM

Sunny

81° 💧 None 💨 10 mph H 41%29.85 inHg

4:00 PM

Sunny

83° 💧 None 💨 11 mph H 36%29.80 inHg

7:00 PM

Partly cloudy

76° 💧 None 💨 8 mph H 48%29.77 inHg

10:00 PM

Mostly clear night

72° 💧 None 💨 10 mph H 68%29.77 inHg

Saturday

1:00 AM

Overcast night

71° 💧 None 💨 10 mph H 70%29.77 inHg

4:00 AM

Partly cloudy night

71° 💧 None 💨 9 mph H 77%29.74 inHg

7:00 AM

Moderate rain

69° 💧 None 💨 2 mph H 93%29.80 inHg

10:00 AM

Sunny

78° 💧 None 💨 7 mph H 77%29.83 inHg

1:00 PM

Partly cloudy

87° 💧 None 💨 7 mph H 56%29.83 inHg

7:00 PM

Mostly cloudy

80° 💧 None 💨 6 mph H 65%29.88 inHg

Sunday

1:00 AM

Clear night

75° 💧 None 💨 4 mph H 73%29.91 inHg

7:00 AM

Partly cloudy

65° 💧 None 💨 5 mph H 87%30.00 inHg

1:00 PM

Overcast

65° 💧 None 💨 6 mph H 86%30.06 inHg

7:00 PM

Overcast

84° 💧 None 💨 7 mph H 61%29.97 inHg

Monday

1:00 AM

Light rain

75° 💧 None 💨 7 mph H 91%29.94 inHg

7:00 AM

Mostly cloudy

70° 💧 None 💨 7 mph H 98%30.00 inHg

1:00 PM

Partly cloudy

66° 💧 None 💨 9 mph H 98%30.00 inHg

7:00 PM

Sunny

86° 💧 None 💨 8 mph H 69%29.94 inHg

Tuesday

1:00 AM

Clear night

86° 💧 None 💨 12 mph H 62%29.80 inHg

7:00 AM

Overcast

82° 💧 None 💨 13 mph H 61%29.83 inHg

1:00 PM

Partly cloudy

67° 💧 None 💨 12 mph H 79%29.97 inHg

7:00 PM

Mostly cloudy

71° 💧 None 💨 8 mph H 56%30.09 inHg

Wednesday

1:00 AM

Mostly cloudy night

66° 💧 None 💨 4 mph H 71%30.15 inHg

7:00 AM

Sunny

59° 💧 None 💨 4 mph H 91%30.27 inHg

1:00 PM

Sunny

54° 💧 None 💨 4 mph H 94%30.33 inHg

7:00 PM

Mostly sunny

73° 💧 None 💨 6 mph H 52%30.36 inHg

Thursday

1:00 AM

Partly cloudy night

70° 💧 None 💨 6 mph H 69%30.30 inHg

7:00 AM

Sunny

62° 💧 None 💨 7 mph H 80%30.36 inHg

1:00 PM

Mostly sunny

58° 💧 None 💨 4 mph H 94%30.36 inHg

7:00 PM

Mostly cloudy

77° 💧 None 💨 5 mph H 52%30.36 inHg

Friday

1:00 AM

Mostly clear night

71° 💧 None 💨 4 mph H 65%30.27 inHg

7:00 AM

Partly cloudy

62° 💧 None 💨 6 mph H 86%30.33 inHg

1:00 PM

Sunny

58° 💧 None 💨 7 mph H 91%30.36 inHg

7:00 PM

Partly cloudy

68° 💧 None 💨 16 mph H 58%30.39 inHg

Saturday

1:00 AM

Mostly clear night

60° 💧 None 💨 12 mph H 52%30.42 inHg

7:00 AM

Sunny

52° 💧 None 💨 6 mph H 72%30.45 inHg

1:00 PM

Sunny

48° 💧 None 💨 6 mph H 80%30.47 inHg

7:00 PM

Partly cloudy

63° 💧 None 💨 7 mph H 43%30.42 inHg

Sunday

1:00 AM

Partly cloudy night

61° 💧 None 💨 8 mph H 54%30.36 inHg

7:00 AM

Sunny

50° 💧 None 💨 4 mph H 76%30.36 inHg

1:00 PM

Sunny

45° 💧 None 💨 4 mph H 92%30.39 inHg

7:00 PM

Sunny

66° 💧 None 💨 7 mph H 37%30.33 inHg

Monday

1:00 AM

Clear night

62° 💧 None 💨 6 mph H 46%30.24 inHg

7:00 AM

Sunny

53° 💧 None 💨 7 mph H 63%30.27 inHg

1:00 PM

Sunny

47° 💧 None 💨 5 mph H 81%30.30 inHg

In Geneseo and, more broadly, across the state of Illinois: The evening will feature a mix of sun and clouds, with temperatures remaining mild to warm, ranging from 76 to 78 degrees Fahrenheit. Winds will be light and coming from the east, with speeds up to 8 mph, occasionally gusting to 18 mph. No precipitation is expected during this time, making for a relatively calm and pleasant evening. The weather should remain stable through the next few hours, with comfortable conditions and no significant weather disturbances anticipated. Overall, it’s a good evening for outdoor activities or relaxing outside. Temperatures will gradually stay steady, and the breeze will provide a gentle refreshment as the night progresses.

15-Day Weather Outlook for Geneseo

Tuesday, Sep 8Tue Sep 8

Partly cloudy 90°/64° 💧 None 💨 11 mph

Wednesday, Sep 9Wed Sep 9

Light thunderstorms 85°/70° 💧 0.352 in 💨 11 mph

Thursday, Sep 10Thu Sep 10

Mostly cloudy 78°/62° 💧 0.000 in 💨 8 mph

Friday, Sep 11Fri Sep 11

Sunny 83°/59° 💧 None 💨 11 mph

Saturday, Sep 12Sat Sep 12

Moderate rain 87°/69° 💧 0.069 in 💨 10 mph

Sunday, Sep 13Sun Sep 13

Mostly cloudy 80°/65° 💧 0.124 in 💨 6 mph

Monday, Sep 14Mon Sep 14

Light rain 84°/66° 💧 0.465 in 💨 9 mph

Tuesday, Sep 15Tue Sep 15

Overcast 86°/67° 💧 0.014 in 💨 13 mph

Wednesday, Sep 16Wed Sep 16

Mostly cloudy 71°/54° 💧 None 💨 8 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 73°/58° 💧 None 💨 7 mph

Friday, Sep 18Fri Sep 18

Mostly cloudy 77°/58° 💧 None 💨 7 mph

Saturday, Sep 19Sat Sep 19

Partly cloudy 68°/48° 💧 None 💨 16 mph

Sunday, Sep 20Sun Sep 20

Partly cloudy 63°/45° 💧 None 💨 8 mph

Monday, Sep 21Mon Sep 21

Sunny 66°/47° 💧 None 💨 7 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Geneseo

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Geneseo

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 10:00 PM

PM2.5 Fine particles Good 8,0µg/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 8,6µg/m³

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

O₃ Ozone Fair 86,0µg/m³

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

NO₂ Nitrogen dioxide Good 2,4µg/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 Geneseo

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 7,4High 🙂Fair

Tomorrow UV 7,3High 😐Moderate

Tuesday UV 7,2High 😐Moderate

Wednesday UV 4,8Moderate 😐Moderate

Thursday UV 6,3High 🙂Fair

Friday UV 7,0High —Unavailable

Saturday UV 7,0High —Unavailable

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 Geneseo

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · GENESEO, ILLINOIS

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 1:00 AM–2:00 AM.

96/100Best-hour score

BEST TIME TONIGHT 1:00 AM–2:00 AM Astronomical darkness: 9:01 PM–4:57 AM

☁ Cloud cover 6% Real hourly forecast for the best viewing hour.

☾ Moonlight 22% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 44° 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 min67%

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 Geneseo were last refreshed today at 8:54 PM. The current forecast period extends through 08/09/2026 at 7:00 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.