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Current weather in Prairie du Rocher is few clouds.

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Weather data for Prairie du Rocher is updated regularly with the latest available observations and forecasts.

Now · 12:51 PM

Prairie du Rocher Weather & Hourly Forecast

United States · Illinois · 62277

87°F

Mostly sunny

Feels like: 92°F

💧 Humidity 55% 🌡 Pressure 29.91 inHg 💨 Wind 3 mph 👁 Visibility 21.5 mi ☁ Clouds 13% ☀️ UV index 7.1 · High 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Prairie du Rocher

Today

1:00 PM

Mostly sunny

87° 💧 None 💨 3 mph H 55%29.91 inHg

4:00 PM

Sunny

89° 💧 None 💨 2 mph H 48%29.85 inHg

7:00 PM

Sunny

81° 💧 None 💨 4 mph H 71%29.85 inHg

10:00 PM

Clear night

76° 💧 None 💨 2 mph H 82%29.94 inHg

Tomorrow

1:00 AM

Mostly clear night

73° 💧 None 💨 2 mph H 90%29.94 inHg

4:00 AM

Clear night

71° 💧 None 💨 3 mph H 91%29.94 inHg

7:00 AM

Mostly sunny

71° 💧 None 💨 2 mph H 91%30.00 inHg

10:00 AM

Partly cloudy

81° 💧 None 💨 1 mph H 74%30.00 inHg

1:00 PM

Mostly cloudy

89° 💧 None 💨 1 mph H 59%29.97 inHg

4:00 PM

Strong thunderstorm

89° 💧 0.114 in 💨 7 mph H 53%29.94 inHg

7:00 PM

Mostly cloudy

77° 💧 0.000 in 💨 1 mph H 94%30.00 inHg

10:00 PM

Clear night

74° 💧 None 💨 6 mph H 95%30.03 inHg

Monday

1:00 AM

Clear night

71° 💧 None 💨 6 mph H 89%30.06 inHg

4:00 AM

Mostly cloudy night

69° 💧 None 💨 6 mph H 83%30.09 inHg

7:00 AM

Mostly cloudy

68° 💧 None 💨 7 mph H 82%30.12 inHg

10:00 AM

Sunny

75° 💧 None 💨 8 mph H 65%30.12 inHg

Today

1:00 PM

Mostly sunny

87° 💧 None 💨 3 mph H 55%29.91 inHg

2:00 PM

Mostly cloudy

88° 💧 None 💨 3 mph H 51%29.88 inHg

3:00 PM

Mostly cloudy

89° 💧 None 💨 2 mph H 49%29.88 inHg

4:00 PM

Sunny

89° 💧 None 💨 2 mph H 48%29.85 inHg

5:00 PM

Mostly sunny

89° 💧 None 💨 2 mph H 47%29.85 inHg

6:00 PM

Mostly sunny

86° 💧 None 💨 2 mph H 62%29.85 inHg

7:00 PM

Sunny

81° 💧 None 💨 4 mph H 71%29.85 inHg

8:00 PM

Clear night

79° 💧 None 💨 2 mph H 77%29.88 inHg

9:00 PM

Clear night

78° 💧 None 💨 2 mph H 79%29.91 inHg

10:00 PM

Clear night

76° 💧 None 💨 2 mph H 82%29.94 inHg

11:00 PM

Clear night

76° 💧 None 💨 0 mph H 82%29.94 inHg

Tomorrow

12:00 AM

Clear night

75° 💧 None 💨 0 mph H 85%29.94 inHg

1:00 AM

Mostly clear night

73° 💧 None 💨 2 mph H 90%29.94 inHg

2:00 AM

Clear night

72° 💧 None 💨 2 mph H 92%29.94 inHg

3:00 AM

Clear night

72° 💧 None 💨 4 mph H 93%29.94 inHg

4:00 AM

Clear night

71° 💧 None 💨 3 mph H 91%29.94 inHg

5:00 AM

Clear night

71° 💧 None 💨 2 mph H 90%29.97 inHg

6:00 AM

Clear night

71° 💧 None 💨 2 mph H 90%29.97 inHg

7:00 AM

Mostly sunny

71° 💧 None 💨 2 mph H 91%30.00 inHg

8:00 AM

Mostly sunny

74° 💧 None 💨 2 mph H 85%30.00 inHg

9:00 AM

Partly cloudy

77° 💧 None 💨 2 mph H 79%30.00 inHg

10:00 AM

Partly cloudy

81° 💧 None 💨 1 mph H 74%30.00 inHg

11:00 AM

Mostly sunny

84° 💧 None 💨 1 mph H 69%30.00 inHg

12:00 PM

Partly cloudy

87° 💧 None 💨 2 mph H 64%30.00 inHg

1:00 PM

Mostly cloudy

89° 💧 None 💨 1 mph H 59%29.97 inHg

2:00 PM

Sunny

90° 💧 None 💨 2 mph H 55%29.94 inHg

3:00 PM

Partly cloudy

91° 💧 None 💨 3 mph H 51%29.94 inHg

4:00 PM

Strong thunderstorm

89° 💧 0.001 in 💨 7 mph H 53%29.94 inHg

5:00 PM

Light thunderstorms

77° 💧 0.088 in 💨 7 mph H 90%29.97 inHg

6:00 PM

Light rain

77° 💧 0.025 in 💨 4 mph H 93%29.97 inHg

7:00 PM

Mostly cloudy

77° 💧 None 💨 1 mph H 94%30.00 inHg

8:00 PM

Partly cloudy night

76° 💧 None 💨 3 mph H 95%30.00 inHg

9:00 PM

Clear night

75° 💧 0.000 in 💨 5 mph H 95%30.03 inHg

10:00 PM

Clear night

74° 💧 None 💨 6 mph H 95%30.03 inHg

11:00 PM

Clear night

73° 💧 None 💨 9 mph H 91%30.06 inHg

Monday

12:00 AM

Clear night

72° 💧 None 💨 6 mph H 90%30.06 inHg

1:00 AM

Clear night

71° 💧 None 💨 6 mph H 89%30.06 inHg

2:00 AM

Mostly cloudy night

70° 💧 None 💨 7 mph H 87%30.06 inHg

3:00 AM

Mostly cloudy night

70° 💧 None 💨 7 mph H 85%30.09 inHg

4:00 AM

Mostly cloudy night

69° 💧 None 💨 6 mph H 83%30.09 inHg

5:00 AM

Mostly cloudy night

69° 💧 None 💨 7 mph H 81%30.09 inHg

6:00 AM

Mostly cloudy night

69° 💧 None 💨 6 mph H 81%30.12 inHg

7:00 AM

Mostly cloudy

68° 💧 None 💨 7 mph H 82%30.12 inHg

8:00 AM

Mostly cloudy

70° 💧 None 💨 7 mph H 77%30.12 inHg

9:00 AM

Mostly sunny

72° 💧 None 💨 8 mph H 71%30.12 inHg

10:00 AM

Sunny

75° 💧 None 💨 8 mph H 65%30.12 inHg

11:00 AM

Sunny

78° 💧 None 💨 8 mph H 63%30.12 inHg

12:00 PM

Sunny

81° 💧 None 💨 8 mph H 63%30.09 inHg

1:00 PM

Sunny

82° 💧 None 💨 8 mph H 64%30.09 inHg

2:00 PM

Sunny

84° 💧 None 💨 8 mph H 65%30.06 inHg

3:00 PM

Sunny

85° 💧 None 💨 8 mph H 64%30.03 inHg

4:00 PM

Sunny

86° 💧 None 💨 8 mph H 65%30.00 inHg

5:00 PM

Sunny

85° 💧 None 💨 9 mph H 66%30.00 inHg

6:00 PM

Sunny

84° 💧 None 💨 8 mph H 71%30.00 inHg

7:00 PM

Mostly sunny

82° 💧 None 💨 8 mph H 76%29.97 inHg

Tuesday

4:00 AM

Clear night

76° 💧 None 💨 8 mph H 85%30.00 inHg

7:00 AM

Sunny

74° 💧 None 💨 4 mph H 87%30.06 inHg

10:00 AM

Sunny

84° 💧 None 💨 6 mph H 65%30.09 inHg

1:00 PM

Sunny

93° 💧 None 💨 9 mph H 42%30.06 inHg

4:00 PM

Mostly sunny

94° 💧 None 💨 7 mph H 44%30.00 inHg

7:00 PM

Sunny

86° 💧 None 💨 8 mph H 55%30.00 inHg

10:00 PM

Clear night

81° 💧 None 💨 6 mph H 63%30.12 inHg

Wednesday

1:00 AM

Clear night

78° 💧 None 💨 5 mph H 69%30.09 inHg

4:00 AM

Clear night

77° 💧 None 💨 5 mph H 71%30.12 inHg

7:00 AM

Sunny

75° 💧 None 💨 5 mph H 78%30.18 inHg

10:00 AM

Sunny

87° 💧 None 💨 5 mph H 61%30.18 inHg

1:00 PM

Mostly sunny

94° 💧 None 💨 7 mph H 42%30.15 inHg

4:00 PM

Sunny

94° 💧 None 💨 8 mph H 41%30.09 inHg

7:00 PM

Sunny

86° 💧 None 💨 7 mph H 58%30.12 inHg

10:00 PM

Clear night

82° 💧 None 💨 7 mph H 63%30.15 inHg

Thursday

1:00 AM

Clear night

80° 💧 None 💨 6 mph H 64%30.15 inHg

4:00 AM

Clear night

78° 💧 None 💨 6 mph H 67%30.15 inHg

7:00 AM

Sunny

77° 💧 None 💨 5 mph H 70%30.18 inHg

10:00 AM

Sunny

85° 💧 None 💨 8 mph H 55%30.21 inHg

1:00 PM

Sunny

92° 💧 None 💨 3 mph H 50%30.18 inHg

4:00 PM

Mostly sunny

94° 💧 None 💨 2 mph H 46%30.09 inHg

7:00 PM

Light rain

81° 💧 None 💨 2 mph H 87%30.12 inHg

10:00 PM

Clear night

78° 💧 None 💨 2 mph H 95%30.15 inHg

Friday

1:00 AM

Clear night

76° 💧 None 💨 0 mph H 98%30.12 inHg

7:00 AM

Sunny

77° 💧 None 💨 4 mph H 74%30.12 inHg

1:00 PM

Sunny

72° 💧 None 💨 4 mph H 74%30.09 inHg

7:00 PM

Sunny

93° 💧 None 💨 5 mph H 36%30.03 inHg

Saturday

1:00 AM

Clear night

85° 💧 None 💨 5 mph H 54%29.94 inHg

7:00 AM

Sunny

78° 💧 None 💨 6 mph H 54%29.94 inHg

1:00 PM

Partly cloudy

73° 💧 None 💨 5 mph H 59%29.91 inHg

7:00 PM

Mostly cloudy

91° 💧 None 💨 5 mph H 31%29.85 inHg

Sunday

1:00 AM

Mostly cloudy night

80° 💧 None 💨 13 mph H 59%29.85 inHg

7:00 AM

Light rain

68° 💧 None 💨 10 mph H 91%29.94 inHg

1:00 PM

Overcast

66° 💧 None 💨 9 mph H 87%29.97 inHg

7:00 PM

Overcast

76° 💧 None 💨 12 mph H 55%30.00 inHg

Monday

1:00 AM

Overcast night

75° 💧 None 💨 10 mph H 41%29.97 inHg

7:00 AM

Sunny

66° 💧 None 💨 12 mph H 56%30.06 inHg

1:00 PM

Sunny

58° 💧 None 💨 6 mph H 76%30.09 inHg

7:00 PM

Clear night

75° 💧 None 💨 6 mph H 40%30.03 inHg

Tuesday

1:00 AM

Clear night

70° 💧 None 💨 6 mph H 36%29.97 inHg

7:00 AM

Mostly sunny

62° 💧 None 💨 4 mph H 60%30.00 inHg

1:00 PM

Overcast

58° 💧 None 💨 3 mph H 74%30.03 inHg

7:00 PM

Clear night

76° 💧 None 💨 7 mph H 34%30.03 inHg

Wednesday

1:00 AM

Clear night

71° 💧 None 💨 5 mph H 41%30.00 inHg

7:00 AM

Sunny

62° 💧 None 💨 5 mph H 58%30.03 inHg

1:00 PM

Sunny

58° 💧 None 💨 4 mph H 74%30.09 inHg

7:00 PM

Clear night

81° 💧 None 💨 5 mph H 42%30.09 inHg

Thursday

1:00 AM

Clear night

78° 💧 None 💨 8 mph H 46%30.03 inHg

7:00 AM

Sunny

68° 💧 None 💨 4 mph H 60%30.09 inHg

1:00 PM

Sunny

63° 💧 None 💨 3 mph H 80%30.15 inHg

7:00 PM

Clear night

84° 💧 None 💨 7 mph H 37%30.15 inHg

Friday

1:00 AM

Clear night

78° 💧 None 💨 6 mph H 40%30.12 inHg

7:00 AM

Sunny

68° 💧 None 💨 4 mph H 57%30.15 inHg

1:00 PM

Sunny

62° 💧 None 💨 3 mph H 73%30.21 inHg

7:00 PM

Clear night

85° 💧 None 💨 8 mph H 32%30.18 inHg

Saturday

1:00 AM

Clear night

78° 💧 None 💨 3 mph H 42%30.09 inHg

7:00 AM

Sunny

69° 💧 None 💨 4 mph H 59%30.12 inHg

1:00 PM

Sunny

63° 💧 None 💨 4 mph H 79%30.12 inHg

7:00 PM

Clear night

84° 💧 None 💨 7 mph H 35%30.06 inHg

Sunday

1:00 AM

Clear night

78° 💧 None 💨 5 mph H 39%29.97 inHg

In Prairie du Rocher and, more broadly, across the state of Illinois: The afternoon will be mostly sunny with just a few clouds scattered across the sky. Temperatures will remain warm, ranging from the mid-70s to the high 80s. Expect daytime highs around 86 degrees, making for a hot and bright afternoon. Winds will be light, coming from the northwest at speeds up to 8 mph, with occasional gusts reaching 12 mph. No rain is expected, so outdoor plans should be comfortable and dry. As the day progresses, the weather will stay stable with clear skies and mild breezes. It’s a good time to enjoy outdoor activities, but remember to stay hydrated and wear sun protection as the temperatures stay on the warmer side. Overall, it looks like a pleasant, warm afternoon ahead.

15-Day Weather Outlook for Prairie du Rocher

TomorrowTomorrow

Strong thunderstorm 91°/71° 💧 None 💨 7 mph

Monday, Sep 14Mon Sep 14

Mostly cloudy 86°/68° 💧 None 💨 9 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 94°/74° 💧 0.010 in 💨 9 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 94°/75° 💧 None 💨 8 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 94°/77° 💧 0.001 in 💨 8 mph

Friday, Sep 18Fri Sep 18

Light rain 81°/72° 💧 0.063 in 💨 4 mph

Saturday, Sep 19Sat Sep 19

Partly cloudy 93°/73° 💧 None 💨 6 mph

Sunday, Sep 20Sun Sep 20

Light rain 91°/66° 💧 0.038 in 💨 13 mph

Monday, Sep 21Mon Sep 21

Overcast 76°/58° 💧 0.009 in 💨 12 mph

Tuesday, Sep 22Tue Sep 22

Mostly sunny 75°/58° 💧 None 💨 6 mph

Wednesday, Sep 23Wed Sep 23

Sunny 76°/58° 💧 None 💨 7 mph

Thursday, Sep 24Thu Sep 24

Sunny 81°/63° 💧 None 💨 8 mph

Friday, Sep 25Fri Sep 25

Sunny 84°/62° 💧 None 💨 7 mph

Saturday, Sep 26Sat Sep 26

Sunny 85°/63° 💧 None 💨 8 mph

Sunday, Sep 27Sun Sep 27

Sunny 84°/78° 💧 None 💨 7 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Prairie du Rocher

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Prairie du Rocher

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 1:00 PM

PM2.5 Fine particles Good 4,0µg/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 4,3µg/m³

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

O₃ Ozone Fair 71,3µg/m³

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

NO₂ Nitrogen dioxide Good 0,4µg/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 Prairie du Rocher

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 7,7High 🙂Fair

Tomorrow UV 7,6High 🙂Fair

Monday UV 7,6High 🙂Fair

Tuesday UV 9,0Very high 🙂Fair

Wednesday UV 9,0Very high 🙂Fair

Thursday UV 9,0Very high —Unavailable

Friday UV 8,0Very high —Unavailable

Hourly UV index today

1:00 PMUV 7,7 2:00 PMUV 7,0 3:00 PMUV 5,4 4:00 PMUV 3,4 5:00 PMUV 1,5 6:00 PMUV 0,5 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.

Stay hydrated

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

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 Prairie du Rocher

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · PRAIRIE DU ROCHER, ILLINOIS

Tonight's Stargazing & Shooting Stars

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

98/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 8:42 PM–5:11 AM

☁ Cloud cover 0% Real hourly forecast for the best viewing hour.

☾ Moonlight 3% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 86° high at the best hour.

✦ Estimated visible meteors 2–5/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min81%

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 Prairie du Rocher were last refreshed today at 12:51 PM. The current forecast period extends through 14/09/2026 at 10:00 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.