Contents
- Weather in February
- Frequently asked questions
- Average temperature in February
- Average pressure in February
- Average wind speed in February
- Average humidity in February
- Average rainfall in February
- Average rainfall days in February
- Average snowfall in February
- Average snowfall days in February
- Average daylight in February
- Average sunshine in February
- Average sunshine days in February
- Average UV index in February
- Average cloud cover in February
- Average visibility in February
Weather in February
Temperature
The onset of February in Johnston brings with it an average high-temperature of a still subzero cold 31.5°F (-0.3°C), showing a negligible variation from the month before. Johnston observes an average nighttime temperature of 18°F (-7.8°C) during February.Humidity
The average relative humidity in February is 82%.Rainfall
In February, the rain falls for 3.5 days. Throughout February, 0.51" (13mm) of precipitation is accumulated. Throughout the year, there are 114.6 rainfall days, and 15.51" (394mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Johnston, in February, during 7.7 snowfall days, 1.93" (49mm) of snow is typically accumulated. Throughout the year, there are 29.6 snowfall days, and 6.77" (172mm) of snow is accumulated.Daylight
The average length of the day in February is 10h and 38min.On the first day of the month, sunrise is at 7:26 am and sunset at 5:29 pm. On the last day of February, sunrise is at 6:49 am and sunset at 6:04 pm CST.
Sunshine
In February, the average sunshine is 4.9h.UV index
The average daily maximum UV index in February is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In February, the UV index of 2 transforms into the following advice:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in February?
What is the average humidity in February?
How much does it rain in February?
How many days does it snow in February?
What is the average length of the day in February?
What time are sunrise and sunset in February?
How many hours of sunshine does Johnston have in February?
How high is the UV index in February in Johnston?
Average temperature in February
Johnston, IA
- Average high temperature in February: 31.5°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in February: 18°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in February
Johnston, IA
- Average pressure in February: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in February
Johnston, IA
- Average wind speed in February: 10.3mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in February
Johnston, IA
- Average humidity in February: 82%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in February
Johnston, IA
- Average rainfall in February: 0.51"
The wettest months (with the highest rainfall) are May and June (2.52").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in February
Johnston, IA
- Average rainfall days in February: 3.5 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (3.5 days).
Average snowfall in February
Johnston, IA
- Average snowfall in February: 1.93"
The month with the highest snowfall is January (2.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in February
Johnston, IA
- Average snowfall days in February: 7.7 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in February /
Average sunshine in February
Johnston, IA
- Average daylight in February: 10h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in February: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in February
Johnston, IA
- Average sunshine days in February: 17.8 days
The month with the most sunshine days is December (22.8 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in February
Johnston, IA
- Average UV index in February: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in February
Johnston, IA
- Average cloud cover in February: 50
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is September (Cloud cover 28).
Average visibility in February
Johnston, IA
- Average visibility in February: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Johnston, Iowa, USA
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