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Now · 6:10 AM

Grantfork Weather & Hourly Forecast

United States · Illinois · 62249

Overcast night
63°F
Overcast night
Feels like: 65°F
💧 Humidity 93% 🌡 Pressure 30.24 inHg 💨 Wind 3 mph 👁 Visibility 12.5 mi ☁ Clouds 100% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:48 AM 🌇 Sunset 6:52 PM

Hourly Forecast for Grantfork

Today
Overcast · 7:00 AM Overcast
63° 💧 0.000 in 💨 4 mph H 92%30.24 inHg
Mostly cloudy · 10:00 AM Mostly cloudy
66° 💧 None 💨 5 mph H 81%30.27 inHg
Overcast · 1:00 PM Overcast
72° 💧 0.003 in 💨 6 mph H 65%30.24 inHg
Overcast · 4:00 PM Overcast
72° 💧 None 💨 6 mph H 63%30.18 inHg
Mostly clear night · 7:00 PM Mostly clear night
68° 💧 None 💨 4 mph H 71%30.15 inHg
Partly cloudy night · 10:00 PM Partly cloudy night
63° 💧 None 💨 4 mph H 79%30.18 inHg
Tomorrow
Partly cloudy night · 1:00 AM Partly cloudy night
61° 💧 None 💨 6 mph H 77%30.15 inHg
Mostly clear night · 4:00 AM Mostly clear night
58° 💧 None 💨 5 mph H 81%30.12 inHg
Partly cloudy · 7:00 AM Partly cloudy
56° 💧 None 💨 5 mph H 83%30.15 inHg
Mostly cloudy · 10:00 AM Mostly cloudy
66° 💧 None 💨 6 mph H 64%30.15 inHg
Mostly cloudy · 1:00 PM Mostly cloudy
72° 💧 None 💨 5 mph H 48%30.12 inHg
Overcast · 4:00 PM Overcast
73° 💧 0.022 in 💨 2 mph H 45%30.06 inHg
Light rain · 7:00 PM Light rain
65° 💧 0.008 in 💨 3 mph H 75%30.03 inHg
Overcast night · 10:00 PM Overcast night
63° 💧 0.001 in 💨 2 mph H 71%30.03 inHg
Sunday
Overcast night · 1:00 AM Overcast night
64° 💧 0.027 in 💨 3 mph H 75%30.03 inHg
Thunderstorms · 4:00 AM Thunderstorms
62° 💧 0.246 in 💨 2 mph H 89%30.03 inHg

In Grantfork and, more broadly, across the state of Illinois: This morning begins with mostly cloudy skies and mild temperatures ranging from 60 to 69 degrees Fahrenheit. Winds will be coming from the northeast at around 11 mph, with gusts reaching up to 21 mph. As the day progresses into the afternoon, the cloud cover is expected to persist, but no precipitation is anticipated. Temperatures are likely to remain steady within the mild range, providing comfortable conditions for outdoor activities. Winds will continue from the northeast, maintaining a moderate breeze throughout the day. Overall, it will be a relatively calm day with partly cloudy skies and no significant weather disruptions.

15-Day Weather Outlook for Grantfork

TomorrowTomorrow Mostly cloudy Mostly cloudy 73°/56° 💧 None 💨 7 mph
Sunday, Sep 27Sun Sep 27 Thunderstorms Thunderstorms 75°/61° 💧 None 💨 5 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Grantfork

Vertical axis: °F · Color based on temperature
Overcast at 7:00 AM
63° Today 7:00 AM
Overcast at 8:00 AM
64° 8:00 AM
Overcast at 9:00 AM
65° 9:00 AM
Mostly cloudy at 10:00 AM
66° 10:00 AM
Mostly cloudy at 11:00 AM
69° Today 11:00 AM
Mostly cloudy at 12:00 PM
71° 12:00 PM
Overcast at 1:00 PM
72° 1:00 PM
Overcast at 2:00 PM
72° 2:00 PM
Overcast at 3:00 PM
72° Today 3:00 PM
Overcast at 4:00 PM
72° 4:00 PM
Overcast at 5:00 PM
72° 5:00 PM
Partly cloudy at 6:00 PM
71° 6:00 PM
Mostly clear night at 7:00 PM
68° Today 7:00 PM
Partly cloudy night at 8:00 PM
66° 8:00 PM
Partly cloudy night at 9:00 PM
64° 9:00 PM
Partly cloudy night at 10:00 PM
63° 10:00 PM
Mostly cloudy night at 11:00 PM
62° Today 11:00 PM
Mostly cloudy night at 12:00 AM
62° 12:00 AM
Partly cloudy night at 1:00 AM
61° 1:00 AM
Mostly clear night at 2:00 AM
59° 2:00 AM
Clear night at 3:00 AM
58° Tomorrow 3:00 AM
Mostly clear night at 4:00 AM
58° 4:00 AM
Mostly clear night at 5:00 AM
57° 5:00 AM
Mostly cloudy night at 6:00 AM
56° 6:00 AM
Partly cloudy at 7:00 AM
56° Tomorrow 7:00 AM
Partly cloudy at 8:00 AM
59° 8:00 AM
Mostly cloudy at 9:00 AM
62° 9:00 AM
Mostly cloudy at 10:00 AM
66° 10:00 AM
Mostly cloudy at 11:00 AM
69° Tomorrow 11:00 AM
Mostly sunny at 12:00 PM
71° 12:00 PM
Mostly cloudy at 1:00 PM
72° 1:00 PM
Overcast at 2:00 PM
73° 2:00 PM
Overcast at 3:00 PM
73° Tomorrow 3:00 PM
Overcast at 4:00 PM
73° 4:00 PM
Light rain at 5:00 PM
71° 5:00 PM
Light rain at 6:00 PM
67° 6:00 PM
Light rain at 7:00 PM
65° Tomorrow 7:00 PM
Light rain at 8:00 PM
65° 8:00 PM
Partly cloudy night at 9:00 PM
63° 9:00 PM
Overcast night at 10:00 PM
63° 10:00 PM
Overcast night at 11:00 PM
64° Tomorrow 11:00 PM
Overcast night at 12:00 AM
64° 12:00 AM
Overcast night at 1:00 AM
64° 1:00 AM
Overcast night at 2:00 AM
63° 2:00 AM
Light rain at 3:00 AM
62° Sunday 3:00 AM
Thunderstorms at 4:00 AM
62° 4:00 AM
Light rain at 5:00 AM
62° 5:00 AM
Light rain at 6:00 AM
61° 6:00 AM
Mostly cloudy at 7:00 AM
61° Sunday 7:00 AM
Partly cloudy at 8:00 AM
62° 8:00 AM
Mostly cloudy at 9:00 AM
64° 9:00 AM
Partly cloudy at 10:00 AM
67° 10:00 AM
Mostly sunny at 11:00 AM
69° Sunday 11:00 AM
Sunny at 12:00 PM
72° 12:00 PM
Mostly sunny at 1:00 PM
73° 1:00 PM
Sunny at 2:00 PM
74° 2:00 PM
Sunny at 3:00 PM
75° Sunday 3:00 PM
Mostly sunny at 4:00 PM
75° 4:00 PM
Sunny at 5:00 PM
74° 5:00 PM
Sunny at 6:00 PM
72° 6:00 PM
Clear night at 7:00 PM
68° Sunday 7:00 PM

AIR QUALITY FORECAST

Air Quality Forecast for Grantfork

Hourly forecast · Updated every 2 hours
Good
Nearest forecast value 7:00 AM
PM2.5 Fine particles Good 9,0µg/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 9,7µg/m³

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

O₃ Ozone Good 9,9µg/m³

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

NO₂ Nitrogen dioxide Good 6,7µg/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 Grantfork

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 3,6Moderate 😊Good
Tomorrow UV 4,0Moderate 😐Moderate
Sunday UV 4,1Moderate 😐Moderate
Hourly UV index today
7:00 AMUV 0,0 8:00 AMUV 0,2 9:00 AMUV 0,6 10:00 AMUV 0,7 11:00 AMUV 2,1 12:00 PMUV 3,3 1:00 PMUV 3,6 2:00 PMUV 2,2 3:00 PMUV 2,0 4:00 PMUV 2,0 5:00 PMUV 1,2 6:00 PMUV 0,6
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 Grantfork

Vertical axis: mph · Horizontal axis: hours
Hourly wind speed Chart of sustained wind and maximum gusts in mph. Today 7:00 AM 8:00 AM 9:00 AM 10:00 AM Today 11:00 AM 12:00 PM 1:00 PM 2:00 PM Today 3:00 PM 4:00 PM 5:00 PM 6:00 PM Today 7:00 PM 8:00 PM 9:00 PM 10:00 PM Today 11:00 PM 12:00 AM 1:00 AM 2:00 AM Tomorrow 3:00 AM 4:00 AM 5:00 AM 6:00 AM Tomorrow 7:00 AM 8:00 AM 9:00 AM 10:00 AM Tomorrow 11:00 AM 12:00 PM 1:00 PM 2:00 PM Tomorrow 3:00 PM 4:00 PM 5:00 PM 6:00 PM Tomorrow 7:00 PM 8:00 PM 9:00 PM 10:00 PM Tomorrow 11:00 PM 12:00 AM 1:00 AM 2:00 AM Sunday 3:00 AM 4:00 AM 5:00 AM 6:00 AM Sunday 7:00 AM 8:00 AM 9:00 AM 10:00 AM Sunday 11:00 AM 12:00 PM 1:00 PM 2:00 PM Sunday 3:00 PM 4:00 PM 5:00 PM 6:00 PM Sunday 7:00 PM
Sustained wind Max gusts
NIGHT SKY · GRANTFORK, ILLINOIS

Tonight's Stargazing & Shooting Stars

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

85/100Best-hour score
BEST TIME TONIGHT 3:00 AM–4:00 AM Astronomical darkness: 8:20 PM–5:21 AM
☁ Cloud cover 5% Real hourly forecast for the best viewing hour.
☾ Moonlight 100% Full Moon · Moon about 38° above the horizon at the best viewing hour.
☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 62° high at the best hour.
✦ Estimated visible meteors 0–2/hour Local estimate after weather, moonlight and radiant-height adjustments.
Chance ≥1 meteor in 30 min39%
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.

Forecast data for Grantfork were last refreshed today at 1:54 AM. The current forecast period extends through 27/09/2026 at 4:00 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.