Weather forecast for 10 days
Johnston, IA

Weather forecast for the weekend

Saturday, Jun 21.

Sunny
5:39 am

8:54 pm
CDT
Sunny
95°F / 75°F
  • Wind: 19mph SSW
  • Humidity: 58%
  • Precip. probability: 3%
  • Precipitation: 0"
  • UV index: 9
On Saturday, in Johnston, the weather remains calm, bright, and sunny.
Rainfall is not expected. Temperature is anticipated to swing from a high of a steamy 95°F to a low of a temperate 75.2°F.
On Saturday, temperatures will feel hotter as the forecast mirrors July's average high rather than June's.
Sunrise will be at 5:39 am and sunset at 8:54 pm; the daylight will last for 15h and 16min.

Sunday, Jun 22.

Sunny / Wind
5:39 am

8:54 pm
CDT
Sunny / Wind
93°F / 75°F
  • Wind: 21mph SSW
  • Humidity: 59%
  • Precip. probability: 3%
  • Precipitation: 0"
  • UV index: 9
On Sunday, in Johnston, expect sunny conditions paired with gusty winds.
Rainfall is not anticipated. The temperature will fluctuate from a high of a blazing 93.2°F to a low of a warm 75.2°F.
With a forecast of 93.2°F, the day’s weather feels closer to July than June.
Sunrise will be at 5:39 am and sunset at 8:54 pm; the daylight will last for 15h and 16min.

Frequently asked questions

What is the weather forecast for Johnston for Saturday?
On Saturday, in Johnston, expect bright skies and plenty of sunshine.
Will it rain on Saturday in Johnston?
No, it will not rain on Saturday.
What will be the maximum temperature on Saturday?
On Saturday, the maximum temperature will be 95°F, while the minimum temperature will be 75.2°F.
What is the weather forecast for Johnston for Sunday?
On Sunday, in Johnston, the forecast includes windy conditions beneath bright skies.
Will it rain on Sunday?
No, it will not rain on Sunday.
What will be the maximum temperature on Sunday?
On Sunday, the highest temperature will be 93.2°F, while the lowest temperature will be 75.2°F.
What is the weather forecast for Johnston for the next ten days?
In Johnston, a combination of mostly clear, thunderstorm-prone and damp weather is predicted for the next ten days.
Will it rain in the next ten days?
Rainfall is forecasted for Wednesday, next Tuesday through next Thursday in Johnston. Wednesday, with moderate precipitation of 0.43", will be the day with the most rainfall.
How hot will it be in the next ten days?
The maximum temperature will vary between 78.8°F and 95°F, as the minimum temperature will range between 60.8°F and 77°F.
Including the humidity's impact, the maximum feel-like temperature will range between 78.8°F and 111.2°F.
What will be the hottest and the coldest days?
Saturday will be the hottest day, with a maximum temperature of 95°F. Tomorrow will be the coldest day, with a maximum temperature of 78.8°F.

Long-term weather forecast

TueJun 17.
  • 82°F
  • 64°F
PM Thunderstorms
PM Thunderstorms
  • Wind: 9mph SW
  • Humidity: 69%
  • UV index: 6
  • Precip. probability: 46%
  • Precipitation: 0"
  • 5:38 am 8:53 pm CDT
WedJun 18.
  • 79°F
  • 61°F
AM Showers
AM Showers
  • Wind: 16mph N
  • Humidity: 77%
  • UV index: 5
  • Precip. probability: 55%
  • Precipitation: 0.43"
  • 5:38 am 8:53 pm CDT
ThuJun 19.
  • 90°F
  • 72°F
Sunny
Sunny
  • Wind: 11mph WSW
  • Humidity: 58%
  • UV index: 9
  • Precip. probability: 6%
  • Precipitation: 0.28"
  • 5:38 am 8:54 pm CDT
FriJun 20.
  • 91°F
  • 77°F
Mostly Sunny
Mostly Sunny
  • Wind: 19mph S
  • Humidity: 64%
  • UV index: 9
  • Precip. probability: 24%
  • Precipitation: 0"
  • 5:38 am 8:54 pm CDT
SatJun 21.
  • 95°F
  • 75°F
Sunny
Sunny
  • Wind: 19mph SSW
  • Humidity: 58%
  • UV index: 9
  • Precip. probability: 3%
  • Precipitation: 0"
  • 5:39 am 8:54 pm CDT
SunJun 22.
  • 93°F
  • 75°F
Sunny / Wind
Sunny / Wind
  • Wind: 21mph SSW
  • Humidity: 59%
  • UV index: 9
  • Precip. probability: 3%
  • Precipitation: 0"
  • 5:39 am 8:54 pm CDT
MonJun 23.
  • 90°F
  • 68°F
Mostly Sunny
Mostly Sunny
  • Wind: 15mph SSW
  • Humidity: 62%
  • UV index: 9
  • Precip. probability: 24%
  • Precipitation: 0"
  • 5:39 am 8:54 pm CDT
TueJun 24.
  • 82°F
  • 68°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 9mph SSW
  • Humidity: 75%
  • UV index: 7
  • Precip. probability: 50%
  • Precipitation: 0.31"
  • 5:39 am 8:54 pm CDT
WedJun 25.
  • 82°F
  • 66°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 11mph S
  • Humidity: 74%
  • UV index: 7
  • Precip. probability: 41%
  • Precipitation: 0.39"
  • 5:40 am 8:55 pm CDT
ThuJun 26.
  • 84°F
  • 64°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 11mph WSW
  • Humidity: 71%
  • UV index: 8
  • Precip. probability: 42%
  • Precipitation: 0.39"
  • 5:40 am 8:55 pm CDT
Over the next ten days, a mix of bright, stormy and showery weather is forecasted.
Rainfall is expected on Wednesday, next Tuesday through next Thursday.
Expect a substantial fluctuation in daytime highs across the forecast period. Maximum temperatures are forecasted between 78.8°F and 95°F, while the lowest nightly temperature differences will be also quite pronounced, as temperatures overnight will fluctuate from 60.8°F up to 77°F.
With the highest temperature of 95°F, Saturday will be the hottest day; with the highest temperature of 78.8°F, Wednesday will be the coldest day.
Taking the humidity into consideration, the maximum feel-like temperature may increase greatly and vary between 78.8°F and an extremely hot 111.2°F.
Updated: Jun 17, 2025 @ 05:26:48 UTC
Published by: Weather U.S. | About Us
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