The Weather Network
Weather
Maps
News
Video
|
Welcome
Monthly
⋮
Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Johnston, IA
Content continues below
June
Average Temperature
High
28°
Feels 29
Low
17°
Feels 17
Average Precipitation
12 Days
Rain amount
132.6mm
Snow amount
0cm
Content continues below
Daily Historical Averages
June 2026
S
M
T
W
T
F
S
1
2
3
4
28°
5
28°
6
28°
7
27°
8
28°
9
30°
10
32°
11
32°
12
31°
13
28°
14
27°
15
26°
16
26°
17
27°
18
27°
19
20
21
22
23
24
25
26
27
28
29
30
Forecast
Thursday, June 4, 2026
Day
28°
Feels 29
Wind
23 km/h S
Gust
35 km/h
Humidity
51%
P.O.P
90%
Rain
~5 mm
Night
20°
Feels 20
Wind
21 km/h S
Gust
32 km/h
Humidity
94%
P.O.P
100%
Rain
50-75 mm
Historical Averages
Jun 4
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.