Weather forecast for 10 days
Collinsville, IL

Weather forecast for the weekend

Saturday, Apr 19.

Rain
6:15 am

7:42 pm
CDT
Rain
59°F / 54°F
  • Wind: 7mph NNW
  • Humidity: 90%
  • Precip. probability: 97%
  • Precipitation: 1.22"
  • UV index: 3
Tomorrow, periods of rain are likely, bringing damp conditions.
Intense precipitation of 1.22" is anticipated. Temperature is expected to reach a high of a mild 59°F during the day, slightly dropping to a low of a fresh 53.6°F at night.
A forecast high of 59°F brings conditions more familiar to March's average than April's.
Sunrise will be at 6:15 am and sunset at 7:42 pm; tomorrow's daylight will last for 13h and 26min.

Sunday, Apr 20.

AM Rain
6:14 am

7:43 pm
CDT
AM Rain
77°F / 55°F
  • Wind: 16mph SE
  • Humidity: 79%
  • Precip. probability: 76%
  • Precipitation: 0.75"
  • UV index: 4
On Sunday, in Collinsville, the morning will see rainfall, but skies may brighten later.
The chance of rain is high, and precipitation will be moderate. The maximum temperature will be a moderately hot 77°F, while the minimum temperature will be a moderate 55.4°F.
It will be warmer, and the temperature will align more closely with May's average high of 74.5°F than April's.
Sunrise will be at 6:14 am and sunset at 7:43 pm; the daylight will last for 13h and 29min.

Frequently asked questions

What is the weather forecast for Collinsville for Sunday?
On Sunday, in Collinsville, expect rainy weather to start the day before gradual improvement.
Will it rain on Sunday?
Moderate precipitation of 0.75" is expected on Sunday. The likelihood of rainfall is 76%.
What will be the highest temperature on Sunday?
On Sunday, the maximum temperature will be 77°F, while the minimum temperature will be 55.4°F.
What is the weather forecast for Collinsville for the next ten days?
In Collinsville, a combination of cloudy, unstable and wet weather is expected for the next ten days.
Will it rain in the next ten days?
Rain is expected on Friday through Sunday, Thursday through next Saturday in Collinsville. Saturday, with intense precipitation of 1.22", will be the day with the most rainfall.
How warm will it be in the next ten days?
The maximum temperature will range between 59°F and 80.6°F, as the minimum temperature will vary between 46.4°F and 60.8°F.
What will be the warmest and the coldest days?
The warmest days will be Wednesday and Thursday, with a maximum of 80.6°F. Tomorrow will be the coldest day, with a maximum temperature of 59°F.

Long-term weather forecast

FriApr 18.
  • min.
  • 57°F
Thunderstorms
Thunderstorms
  • Wind: 14mph WSW
  • Humidity: 79%
  • UV index: 0
  • Precip. probability: 100%
  • Precipitation: 0.55"
  • 6:17 am 7:41 pm CDT
SatApr 19.
  • 59°F
  • 54°F
Rain
Rain
  • Wind: 7mph NNW
  • Humidity: 90%
  • UV index: 3
  • Precip. probability: 97%
  • Precipitation: 1.22"
  • 6:15 am 7:42 pm CDT
SunApr 20.
  • 77°F
  • 55°F
AM Rain
AM Rain
  • Wind: 16mph SE
  • Humidity: 79%
  • UV index: 4
  • Precip. probability: 76%
  • Precipitation: 0.75"
  • 6:14 am 7:43 pm CDT
MonApr 21.
  • 66°F
  • 46°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Wind: 14mph W
  • Humidity: 65%
  • UV index: 7
  • Precip. probability: 8%
  • Precipitation: 0"
  • 6:13 am 7:44 pm CDT
TueApr 22.
  • 77°F
  • 54°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph SSE
  • Humidity: 58%
  • UV index: 8
  • Precip. probability: 8%
  • Precipitation: 0"
  • 6:11 am 7:44 pm CDT
WedApr 23.
  • 81°F
  • 55°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph SE
  • Humidity: 52%
  • UV index: 6
  • Precip. probability: 15%
  • Precipitation: 0"
  • 6:10 am 7:45 pm CDT
ThuApr 24.
  • 81°F
  • 61°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Wind: 11mph SSE
  • Humidity: 58%
  • UV index: 7
  • Precip. probability: 33%
  • Precipitation: 0.2"
  • 6:09 am 7:46 pm CDT
FriApr 25.
  • 72°F
  • 59°F
Thunderstorms
Thunderstorms
  • Wind: 10mph SE
  • Humidity: 79%
  • UV index: 3
  • Precip. probability: 64%
  • Precipitation: 0.59"
  • 6:07 am 7:47 pm CDT
SatApr 26.
  • 72°F
  • 55°F
AM Showers
AM Showers
  • Wind: 10mph NNE
  • Humidity: 72%
  • UV index: 6
  • Precip. probability: 33%
  • Precipitation: 0.04"
  • 6:06 am 7:48 pm CDT
SunApr 27.
  • 75°F
  • 57°F
Partly Cloudy
Partly Cloudy
  • Wind: 10mph ESE
  • Humidity: 66%
  • UV index: 8
  • Precip. probability: 17%
  • Precipitation: 0"
  • 6:05 am 7:49 pm CDT
gloomy, thunderstorm-prone and rain-soaked weather is expected.
Rain is forecasted for Friday through Sunday, Thursday through next Saturday.
Expect a substantial fluctuation in daytime highs across the forecast period. Maximum temperatures are forecasted between 59°F and 80.6°F, while the lowest night temperatures will vary also significantly, as temperatures overnight will fluctuate from 46.4°F up to 60.8°F.
Wednesday and Thursday, with the highest temperature of 80.6°F, will be the warmest days in Collinsville, Illinois; Saturday will be the coldest day, with the highest temperature of 59°F.
Updated: Apr 18, 2025 @ 21:07:15 UTC
Published by: Weather Atlas | About Us
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