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Johnston, United States Snapshot 2026
Where is Johnston?
Johnston, United States
- Continent
- Americas
- Country
- United States
- City
- Johnston
- Population
- 20.9K
- Elevation
- 253 m
- Coordinates
- 41.67°, -93.70°
Johnston is a city in United States with a population of approximately 20.9K. Average temperatures range from -9°C (16°F) in January to 30°C (85°F) in July. The best time to visit is May, June, July, August, September. The city sits at an elevation of 253 m above sea level.
Time in Johnston right now
Open full time & time zone page 20:54 54
Tuesday, June 16, 2026
IANA time zone
America/Chicago
Daylight saving
DST in effect
CST / CDT
Next DST change
November 1
backward -1h
Live weather in Johnston
Daylight in Johnston today
View full sunrise & sunset page Sunrise
Sunset
Day length
15h 11m
Climate normals for Johnston
Long-term monthly averages based on historical data.
January
Poor 
February
Poor March
Poor April
Fair May best
Excellent June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 0°C / -9°C | -5°C / -14°C | 7days (37 mm) Good | 5.8h Fair | 74% Muggy | 2.5 Moderate | Poor | View Details |
| February | 3°C / -8°C | -2°C / -13°C | 5days (31 mm) Good | 7.5h Good | 69% Muggy | 3.7 Moderate | Poor | View Details |
| March | 11°C / 0°C | 7°C / -4°C | 9days (79 mm) Wet | 7.7h Good | 66% Muggy | 4.6 Moderate | Poor | View Details |
| April | 17°C / 5°C | 14°C / 1°C | 11days (86 mm) Wet | 8.9h Good | 63% Muggy | 5.6 High | Fair | View Details |
| May best | 23°C / 12°C | 22°C / 10°C | 13days (147 mm) Wet | 9.6h Good | 68% Muggy | 7 High | Excellent | View Details |
| June best | 29°C / 19°C | 31°C / 19°C | 10days (109 mm) Wet | 12.2h Excellent | 67% Muggy | 7.3 Very High | Excellent | View Details |
| July best | 30°C / 20°C | 33°C / 22°C | 8days (94 mm) Wet | 12h Excellent | 72% Muggy | 7.2 Very High | Excellent | View Details |
| August best | 29°C / 19°C | 31°C / 20°C | 8days (84 mm) Wet | 11.1h Excellent | 71% Muggy | 6.7 High | Excellent | View Details |
| September best | 26°C / 16°C | 27°C / 16°C | 8days (87 mm) Wet | 9.7h Good | 68% Muggy | 5.7 High | Excellent | View Details |
| October | 19°C / 9°C | 16°C / 6°C | 8days (90 mm) Wet | 7.8h Good | 63% Muggy | 4 Moderate | Good | View Details |
| November | 10°C / 1°C | 6°C / -3°C | 6days (45 mm) Good | 6.5h Fair | 67% Muggy | 2.7 Moderate | Poor | View Details |
| December | 4°C / -5°C | -1°C / -10°C | 5days (38 mm) Good | 5.8h Fair | 71% Muggy | 2.2 Moderate | Poor | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: 0°C / -9°C . Feb: 3°C / -8°C . Mar: 11°C / 0°C . Apr: 17°C / 5°C . May: 23°C / 12°C . Jun: 29°C / 19°C . Jul: 30°C / 20°C . Aug: 29°C / 19°C . Sep: 26°C / 16°C . Oct: 19°C / 9°C . Nov: 10°C / 1°C . Dec: 4°C / -5°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 37 mm. Feb: 31 mm. Mar: 79 mm. Apr: 86 mm. May: 147 mm. Jun: 109 mm. Jul: 94 mm. Aug: 84 mm. Sep: 87 mm. Oct: 90 mm. Nov: 45 mm. Dec: 38 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 74%. Feb: 69%. Mar: 66%. Apr: 63%. May: 68%. Jun: 67%. Jul: 72%. Aug: 71%. Sep: 68%. Oct: 63%. Nov: 67%. Dec: 71%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 23 km/h . Feb: 23 km/h . Mar: 25 km/h . Apr: 26 km/h . May: 22 km/h . Jun: 20 km/h . Jul: 18 km/h . Aug: 18 km/h . Sep: 20 km/h . Oct: 23 km/h . Nov: 23 km/h . Dec: 22 km/h .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 6. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 7. Sep: UV 6. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Frequently Asked Questions
Johnston has a population of approximately 20.9K.
The best months to visit Johnston are May, June, July, August, September, when temperatures are pleasant and rainfall is lower.
Johnston receives approximately 927mm of rainfall annually across 98 rainy days.
Johnston is located in United States, in the Americas region.
Johnston sits at an elevation of 253 m (830 ft) above sea level.