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

Now · 7:18 AM

Allendale Weather & Hourly Forecast

United States · Illinois · 62410

71°F

Sunny

Feels like: 71°F

💧 Humidity 76% 🌡 Pressure 30.09 inHg 💨 Wind 8 mph 👁 Visibility 17.5 mi ☁ Clouds 0% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Allendale

Today

8:00 AM

Sunny

75° 💧 None 💨 8 mph H 71%30.09 inHg

11:00 AM

Sunny

89° 💧 0.000 in 💨 9 mph H 52%30.12 inHg

2:00 PM

Mostly sunny

95° 💧 0.001 in 💨 11 mph H 43%30.06 inHg

5:00 PM

Mostly cloudy

94° 💧 0.002 in 💨 9 mph H 45%30.03 inHg

8:00 PM

Clear night

85° 💧 0.000 in 💨 4 mph H 64%30.09 inHg

11:00 PM

Clear night

81° 💧 None 💨 4 mph H 72%30.12 inHg

Tomorrow

2:00 AM

Clear night

79° 💧 None 💨 4 mph H 78%30.12 inHg

5:00 AM

Clear night

77° 💧 None 💨 4 mph H 83%30.15 inHg

8:00 AM

Sunny

79° 💧 None 💨 4 mph H 74%30.24 inHg

11:00 AM

Sunny

91° 💧 0.000 in 💨 4 mph H 50%30.24 inHg

2:00 PM

Sunny

97° 💧 0.000 in 💨 8 mph H 38%30.21 inHg

5:00 PM

Sunny

96° 💧 0.000 in 💨 8 mph H 36%30.15 inHg

8:00 PM

Clear night

87° 💧 None 💨 6 mph H 51%30.18 inHg

11:00 PM

Clear night

83° 💧 None 💨 5 mph H 59%30.21 inHg

Thursday

2:00 AM

Clear night

79° 💧 None 💨 4 mph H 69%30.18 inHg

5:00 AM

Clear night

77° 💧 None 💨 5 mph H 76%30.21 inHg

Today

8:00 AM

Sunny

75° 💧 None 💨 8 mph H 71%30.09 inHg

9:00 AM

Sunny

79° 💧 None 💨 7 mph H 64%30.12 inHg

10:00 AM

Sunny

85° 💧 None 💨 8 mph H 57%30.12 inHg

11:00 AM

Sunny

89° 💧 None 💨 9 mph H 52%30.12 inHg

12:00 PM

Sunny

92° 💧 None 💨 10 mph H 48%30.09 inHg

1:00 PM

Sunny

94° 💧 0.000 in 💨 11 mph H 44%30.09 inHg

2:00 PM

Mostly sunny

95° 💧 0.000 in 💨 11 mph H 43%30.06 inHg

3:00 PM

Mostly sunny

95° 💧 0.000 in 💨 10 mph H 44%30.06 inHg

4:00 PM

Mostly sunny

95° 💧 0.000 in 💨 9 mph H 44%30.06 inHg

5:00 PM

Mostly cloudy

94° 💧 0.000 in 💨 9 mph H 45%30.03 inHg

6:00 PM

Strong thunderstorm

91° 💧 0.001 in 💨 7 mph H 52%30.06 inHg

7:00 PM

Sunny

87° 💧 0.001 in 💨 4 mph H 60%30.06 inHg

8:00 PM

Clear night

85° 💧 0.000 in 💨 4 mph H 64%30.09 inHg

9:00 PM

Clear night

84° 💧 None 💨 4 mph H 68%30.12 inHg

10:00 PM

Clear night

83° 💧 None 💨 4 mph H 69%30.12 inHg

11:00 PM

Clear night

81° 💧 None 💨 4 mph H 72%30.12 inHg

Tomorrow

12:00 AM

Clear night

80° 💧 None 💨 4 mph H 74%30.15 inHg

1:00 AM

Clear night

80° 💧 None 💨 4 mph H 76%30.15 inHg

2:00 AM

Clear night

79° 💧 None 💨 4 mph H 78%30.12 inHg

3:00 AM

Clear night

78° 💧 None 💨 4 mph H 79%30.12 inHg

4:00 AM

Clear night

77° 💧 None 💨 4 mph H 83%30.15 inHg

5:00 AM

Clear night

77° 💧 None 💨 4 mph H 83%30.15 inHg

6:00 AM

Clear night

76° 💧 None 💨 4 mph H 84%30.18 inHg

7:00 AM

Sunny

76° 💧 None 💨 3 mph H 83%30.21 inHg

8:00 AM

Sunny

79° 💧 None 💨 4 mph H 74%30.24 inHg

9:00 AM

Sunny

83° 💧 None 💨 2 mph H 67%30.24 inHg

10:00 AM

Sunny

87° 💧 None 💨 2 mph H 58%30.24 inHg

11:00 AM

Sunny

91° 💧 None 💨 4 mph H 50%30.24 inHg

12:00 PM

Sunny

94° 💧 None 💨 6 mph H 44%30.24 inHg

1:00 PM

Sunny

96° 💧 0.000 in 💨 8 mph H 39%30.24 inHg

2:00 PM

Sunny

97° 💧 0.000 in 💨 8 mph H 38%30.21 inHg

3:00 PM

Sunny

97° 💧 0.000 in 💨 8 mph H 37%30.18 inHg

4:00 PM

Sunny

97° 💧 None 💨 7 mph H 36%30.15 inHg

5:00 PM

Sunny

96° 💧 0.000 in 💨 8 mph H 36%30.15 inHg

6:00 PM

Sunny

93° 💧 None 💨 8 mph H 39%30.15 inHg

7:00 PM

Clear night

89° 💧 None 💨 6 mph H 46%30.15 inHg

8:00 PM

Clear night

87° 💧 None 💨 6 mph H 51%30.18 inHg

9:00 PM

Clear night

86° 💧 None 💨 6 mph H 53%30.21 inHg

10:00 PM

Clear night

85° 💧 None 💨 6 mph H 55%30.21 inHg

11:00 PM

Clear night

83° 💧 None 💨 5 mph H 59%30.21 inHg

Thursday

12:00 AM

Clear night

81° 💧 None 💨 4 mph H 64%30.21 inHg

1:00 AM

Clear night

80° 💧 None 💨 4 mph H 67%30.21 inHg

2:00 AM

Clear night

79° 💧 None 💨 4 mph H 69%30.18 inHg

3:00 AM

Clear night

78° 💧 None 💨 4 mph H 72%30.18 inHg

4:00 AM

Clear night

77° 💧 None 💨 4 mph H 75%30.21 inHg

5:00 AM

Clear night

77° 💧 None 💨 5 mph H 76%30.21 inHg

6:00 AM

Clear night

77° 💧 None 💨 4 mph H 77%30.21 inHg

7:00 AM

Sunny

77° 💧 None 💨 5 mph H 77%30.21 inHg

8:00 AM

Sunny

81° 💧 None 💨 6 mph H 69%30.24 inHg

9:00 AM

Sunny

86° 💧 None 💨 6 mph H 58%30.24 inHg

10:00 AM

Sunny

90° 💧 None 💨 7 mph H 49%30.24 inHg

11:00 AM

Sunny

94° 💧 None 💨 9 mph H 42%30.24 inHg

12:00 PM

Sunny

97° 💧 0.000 in 💨 10 mph H 36%30.21 inHg

1:00 PM

Sunny

98° 💧 None 💨 8 mph H 34%30.18 inHg

2:00 PM

Sunny

99° 💧 0.000 in 💨 7 mph H 32%30.15 inHg

3:00 PM

Sunny

99° 💧 None 💨 7 mph H 31%30.12 inHg

4:00 PM

Mostly sunny

99° 💧 0.000 in 💨 6 mph H 31%30.09 inHg

5:00 PM

Sunny

98° 💧 None 💨 5 mph H 32%30.09 inHg

6:00 PM

Mostly sunny

96° 💧 None 💨 4 mph H 35%30.09 inHg

7:00 PM

Clear night

91° 💧 None 💨 3 mph H 45%30.09 inHg

10:00 PM

Clear night

84° 💧 None 💨 3 mph H 58%30.12 inHg

Friday

1:00 AM

Clear night

81° 💧 None 💨 1 mph H 67%30.12 inHg

4:00 AM

Clear night

78° 💧 None 💨 3 mph H 72%30.12 inHg

7:00 AM

Sunny

76° 💧 None 💨 7 mph H 86%30.15 inHg

10:00 AM

Overcast

84° 💧 None 💨 9 mph H 72%30.15 inHg

1:00 PM

Partly cloudy

93° 💧 None 💨 5 mph H 49%30.09 inHg

4:00 PM

Mostly sunny

95° 💧 None 💨 2 mph H 41%30.00 inHg

7:00 PM

Mostly clear night

88° 💧 None 💨 4 mph H 58%30.00 inHg

10:00 PM

Clear night

81° 💧 None 💨 10 mph H 73%30.03 inHg

Saturday

1:00 AM

Clear night

79° 💧 None 💨 8 mph H 81%30.00 inHg

4:00 AM

Clear night

77° 💧 None 💨 6 mph H 86%29.97 inHg

7:00 AM

Sunny

76° 💧 None 💨 7 mph H 87%29.97 inHg

10:00 AM

Mostly sunny

88° 💧 None 💨 9 mph H 54%29.97 inHg

1:00 PM

Overcast

98° 💧 None 💨 9 mph H 28%29.91 inHg

4:00 PM

Overcast

99° 💧 None 💨 10 mph H 21%29.85 inHg

7:00 PM

Clear night

91° 💧 None 💨 6 mph H 29%29.85 inHg

10:00 PM

Mostly clear night

85° 💧 None 💨 4 mph H 39%29.88 inHg

Sunday

1:00 AM

Clear night

82° 💧 None 💨 7 mph H 41%29.85 inHg

4:00 AM

Partly cloudy night

80° 💧 None 💨 6 mph H 44%29.85 inHg

7:00 AM

Mostly sunny

77° 💧 None 💨 6 mph H 49%29.85 inHg

10:00 AM

Sunny

89° 💧 None 💨 4 mph H 31%29.88 inHg

1:00 PM

Mostly sunny

99° 💧 None 💨 4 mph H 26%29.83 inHg

4:00 PM

Mostly sunny

101° 💧 None 💨 6 mph H 23%29.80 inHg

7:00 PM

Clear night

92° 💧 None 💨 7 mph H 36%29.80 inHg

Monday

1:00 AM

Clear night

80° 💧 None 💨 4 mph H 56%29.83 inHg

7:00 AM

Sunny

78° 💧 None 💨 6 mph H 51%29.85 inHg

1:00 PM

Mostly sunny

99° 💧 None 💨 10 mph H 26%29.85 inHg

7:00 PM

Partly cloudy night

86° 💧 None 💨 11 mph H 52%29.88 inHg

Tuesday

1:00 AM

Light rain

73° 💧 None 💨 5 mph H 95%29.91 inHg

7:00 AM

Partly cloudy

71° 💧 None 💨 6 mph H 98%29.97 inHg

1:00 PM

Overcast

82° 💧 None 💨 6 mph H 61%29.97 inHg

7:00 PM

Mostly clear night

77° 💧 None 💨 5 mph H 63%29.94 inHg

Wednesday

1:00 AM

Mostly clear night

69° 💧 None 💨 5 mph H 83%30.00 inHg

7:00 AM

Sunny

65° 💧 None 💨 5 mph H 98%30.03 inHg

1:00 PM

Mostly sunny

82° 💧 None 💨 7 mph H 49%30.03 inHg

7:00 PM

Mostly clear night

76° 💧 None 💨 5 mph H 58%30.00 inHg

Thursday

1:00 AM

Mostly clear night

69° 💧 None 💨 5 mph H 77%30.03 inHg

7:00 AM

Sunny

64° 💧 None 💨 5 mph H 95%30.06 inHg

1:00 PM

Mostly sunny

82° 💧 None 💨 6 mph H 46%30.06 inHg

7:00 PM

Clear night

76° 💧 None 💨 5 mph H 52%30.00 inHg

Friday

1:00 AM

Mostly clear night

68° 💧 None 💨 8 mph H 77%30.03 inHg

7:00 AM

Mostly cloudy

64° 💧 None 💨 5 mph H 86%30.03 inHg

1:00 PM

Partly cloudy

82° 💧 None 💨 2 mph H 45%30.00 inHg

7:00 PM

Overcast night

80° 💧 None 💨 2 mph H 54%29.94 inHg

Saturday

1:00 AM

Partly cloudy night

70° 💧 None 💨 7 mph H 84%29.91 inHg

7:00 AM

Overcast

67° 💧 None 💨 4 mph H 94%29.94 inHg

1:00 PM

Light rain

74° 💧 None 💨 6 mph H 76%29.91 inHg

7:00 PM

Overcast night

69° 💧 None 💨 7 mph H 94%29.88 inHg

Sunday

1:00 AM

Clear night

66° 💧 None 💨 6 mph H 97%29.91 inHg

7:00 AM

Sunny

62° 💧 None 💨 7 mph H 96%29.97 inHg

1:00 PM

Light rain

75° 💧 None 💨 10 mph H 64%30.00 inHg

7:00 PM

Clear night

70° 💧 None 💨 11 mph H 54%30.00 inHg

Monday

1:00 AM

Clear night

63° 💧 None 💨 9 mph H 67%30.09 inHg

7:00 AM

Sunny

57° 💧 None 💨 7 mph H 84%30.15 inHg

1:00 PM

Mostly sunny

73° 💧 None 💨 9 mph H 47%30.12 inHg

7:00 PM

Mostly clear night

68° 💧 None 💨 8 mph H 58%30.09 inHg

Tuesday

1:00 AM

Mostly clear night

59° 💧 None 💨 9 mph H 74%30.12 inHg

7:00 AM

Overcast

55° 💧 None 💨 8 mph H 74%30.15 inHg

1:00 PM

Overcast

73° 💧 None 💨 8 mph H 45%30.12 inHg

7:00 PM

Overcast night

67° 💧 None 💨 4 mph H 60%30.09 inHg

In Allendale and, more broadly, across the state of Illinois: This morning will start with a mix of sun and clouds, with temperatures rising into the mid to upper 60s. Expect warm conditions to continue into the afternoon, with highs reaching around 88 degrees. There is a potential for light rain later in the day, with an accumulation of about 0.04 inches, and the chance of rain is high. Winds will be moderate from the south at up to 15 mph, with gusts reaching around 39 mph. Be prepared for possible brief showers and gusty conditions as the day progresses.

15-Day Weather Outlook for Allendale

TomorrowTomorrow

Sunny 97°/76° 💧 None 💨 9 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 99°/77° 💧 0.009 in 💨 10 mph

Friday, Sep 18Fri Sep 18

Mostly sunny 95°/76° 💧 0.023 in 💨 10 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 99°/76° 💧 None 💨 10 mph

Sunday, Sep 20Sun Sep 20

Partly cloudy 101°/77° 💧 0.000 in 💨 7 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 99°/78° 💧 0.010 in 💨 11 mph

Tuesday, Sep 22Tue Sep 22

Light rain 82°/71° 💧 0.276 in 💨 6 mph

Wednesday, Sep 23Wed Sep 23

Mostly sunny 82°/65° 💧 0.002 in 💨 7 mph

Thursday, Sep 24Thu Sep 24

Mostly sunny 82°/64° 💧 None 💨 6 mph

Friday, Sep 25Fri Sep 25

Mostly sunny 82°/64° 💧 None 💨 8 mph

Saturday, Sep 26Sat Sep 26

Light rain 74°/67° 💧 0.482 in 💨 7 mph

Sunday, Sep 27Sun Sep 27

Light rain 75°/62° 💧 0.242 in 💨 11 mph

Monday, Sep 28Mon Sep 28

Mostly sunny 73°/57° 💧 None 💨 9 mph

Tuesday, Sep 29Tue Sep 29

Mostly sunny 73°/55° 💧 None 💨 9 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Allendale

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Allendale

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 8:00 AM

PM2.5 Fine particles Good 6,1µg/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 7,0µg/m³

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

O₃ Ozone Good 45,6µg/m³

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

NO₂ Nitrogen dioxide Good 3,5µg/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 Allendale

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 😊Good

Tomorrow UV 7,1High 😐Moderate

Thursday UV 8,0Very high 😐Moderate

Friday UV 8,0Very high 😐Moderate

Saturday UV 9,0Very high 🙂Fair

Sunday UV 8,0Very high —Unavailable

Monday UV 8,0Very high —Unavailable

Hourly UV index today

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

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 Allendale

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ALLENDALE, ILLINOIS

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 4:00 AM–5:00 AM.

99/100Best-hour score

BEST TIME TONIGHT 4:00 AM–5:00 AM Astronomical darkness: 8:29 PM–5:03 AM

☁ Cloud cover 1% Real hourly forecast for the best viewing hour.

☾ Moonlight 21% Waxing Crescent · 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 Allendale were last refreshed today at 7:18 AM. The current forecast period extends through 17/09/2026 at 5:00 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.