Weather forecast for 10 days
Saint Johns, IL

Weather forecast for the weekend

Sunday, May 18.

Mostly Sunny
5:42 am

8:04 pm
CDT
Mostly Sunny
79°F / 63°F
  • Wind: 7mph ESE
  • Humidity: 53%
  • Precip. probability: 19%
  • Precipitation: 0.16"
  • UV index: 8
Today, in Saint Johns, golden sunshine will carry through the day.
The chance of rainfall is low, and light precipitation is anticipated. Temperature is predicted to swing from a high of a moderately hot 78.8°F to a low of a breezy 62.6°F.
Today, the predicted temperature will match May's typical high of 75.4°F.
Sunrise was at 5:42 am and sunset will be at 8:04 pm; the daylight will last for 14h and 23min.

Frequently asked questions

What is the weather forecast for Saint Johns for the next ten days?
In Saint Johns, weather will be unstable, and a combination of cloudy, showery, dry and sunny and storm-filled weather is forecasted for the next ten days.
Will it rain in the next ten days in Saint Johns?
Rainfall is predicted for Sunday through Tuesday, Saturday through next Tuesday in Saint Johns. Monday, with substantial precipitation of 0.87", will be the day with the most rainfall.
How warm will it be in the next ten days?
The maximum temperature will range between 64.4°F and 78.8°F, as the minimum temperature will vary between 48.2°F and 66.2°F.
What will be the warmest and the coldest days?
With a maximum temperature of 78.8°F, Sunday through Tuesday will be the warmest days. With a maximum temperature of 64.4°F, Wednesday and Thursday will be the coldest days.

Long-term weather forecast

SunMay 18.
  • 79°F
  • 63°F
Mostly Sunny
Mostly Sunny
  • Wind: 7mph ESE
  • Humidity: 53%
  • UV index: 8
  • Precip. probability: 19%
  • Precipitation: 0.16"
  • 5:42 am 8:04 pm CDT
MonMay 19.
  • 79°F
  • 66°F
AM Thunderstorms
AM Thunderstorms
  • Wind: 12mph SE
  • Humidity: 79%
  • UV index: 7
  • Precip. probability: 38%
  • Precipitation: 0.87"
  • 5:41 am 8:05 pm CDT
TueMay 20.
  • 79°F
  • 57°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 16mph SSW
  • Humidity: 78%
  • UV index: 9
  • Precip. probability: 55%
  • Precipitation: 0.2"
  • 5:40 am 8:06 pm CDT
WedMay 21.
  • 64°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Wind: 17mph WNW
  • Humidity: 64%
  • UV index: 7
  • Precip. probability: 15%
  • Precipitation: 0"
  • 5:39 am 8:07 pm CDT
ThuMay 22.
  • 64°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Wind: 13mph NW
  • Humidity: 62%
  • UV index: 7
  • Precip. probability: 8%
  • Precipitation: 0"
  • 5:39 am 8:08 pm CDT
FriMay 23.
  • 70°F
  • 54°F
Mostly Sunny
Mostly Sunny
  • Wind: 7mph WNW
  • Humidity: 55%
  • UV index: 9
  • Precip. probability: 10%
  • Precipitation: 0"
  • 5:38 am 8:08 pm CDT
SatMay 24.
  • 68°F
  • 57°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 8mph ESE
  • Humidity: 69%
  • UV index: 7
  • Precip. probability: 24%
  • Precipitation: 0.12"
  • 5:38 am 8:09 pm CDT
SunMay 25.
  • 70°F
  • 61°F
Showers
Showers
  • Wind: 9mph ESE
  • Humidity: 76%
  • UV index: 7
  • Precip. probability: 51%
  • Precipitation: 0.55"
  • 5:37 am 8:10 pm CDT
MonMay 26.
  • 72°F
  • 59°F
Showers
Showers
  • Wind: 11mph SE
  • Humidity: 76%
  • UV index: 6
  • Precip. probability: 41%
  • Precipitation: 0.24"
  • 5:36 am 8:11 pm CDT
TueMay 27.
  • 72°F
  • 57°F
AM Showers
AM Showers
  • Wind: 12mph NW
  • Humidity: 70%
  • UV index: 8
  • Precip. probability: 35%
  • Precipitation: 0.04"
  • 5:36 am 8:12 pm CDT
And a mix of cloud-filled, wet, mostly clear and turbulent weather is expected.
Rainfall is anticipated on Sunday through Tuesday, Saturday through next Tuesday.
Noticeable swings in temperature are expected throughout the forecast window. Maximum temperatures are forecasted between 64.4°F and 78.8°F, while the lowest nightly temperature differences will be also quite pronounced, as the minimum temperature is expected to range between 48.2°F and 66.2°F.
Sunday through Tuesday, with the highest temperature of 78.8°F, will be the warmest days; the coldest days will be Wednesday and Thursday, with a maximum of 64.4°F.
Updated: May 18, 2025 @ 14:32:06 UTC
Published by: Weather Atlas | About Us
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