February weather forecast
Johnston, IA

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Weather in February

Moving from January to February, Johnston sees the winter's grip begin to slightly ease. Despite February being the tail end of winter, it is not devoid of its own frosty appeal. The temperatures, while still hovering in the low range, are beginning to climb, melting snow, and paving the way for spring. Ice fishing remains popular this month while snow lovers cherish the final opportunities for winter recreation. February's charm lies in the balance between winter's embrace and the imminent arrival of spring.

Temperature

The average high-temperature during February registers at a still freezing cold 31.5°F (-0.3°C), closely corresponding to the preceding month. An average low-temperature of 18°F (-7.8°C) is expected in Johnston during February.

Humidity

In Johnston, the average relative humidity in February is 82%.

Rainfall

In Johnston, during February, the rain falls for 3.5 days and regularly aggregates up to 0.51" (13mm) of precipitation. In Johnston, Iowa, during the entire year, the rain falls for 114.6 days and collects up to 15.51" (394mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Johnston, Iowa, during February, snow falls for 7.7 days and regularly aggregates up to 1.93" (49mm) of snow. In Johnston, during the entire year, snow falls for 29.6 days and aggregates up to 6.77" (172mm) of snow.

Daylight

In February, the average length of the day 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 Johnston, the average sunshine in February is 4.9h.

UV index

In February, the average daily maximum UV index in Johnston is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.
Note: In February, the maximum UV index of 2 transforms into these recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
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Frequently asked questions

How cold is it in Johnston in February?

An average high-temperature, in February, in Johnston, is 31.5°F (-0.3°C) and the average low-temperature is 18°F (-7.8°C).

What is the average humidity in February in Johnston?

In Johnston, the average relative humidity in February is 82%.

How much does it rain in Johnston in February?

In Johnston, Iowa, during February, the rain falls for 3.5 days and regularly aggregates up to 0.51" (13mm) of precipitation.

How many days does it snow in February in Johnston?

In Johnston, in February, snow falls for 7.7 days, with typically accumulated 1.93" (49mm) of snow.

How many hours of daylight does Johnston have in February?

In February, the average day length is 10h and 38min.

When is the sunrise / sunset in February in Johnston?

In February, on the first day of the month, sunrise is at 7:26 am and sunset at 5:29 pm. On the last day of the month, in Johnston, Iowa, sunrise is at 6:49 am and sunset at 6:04 pm CST.

How long on average sun shines in February in Johnston?

In February, the average sunshine duration is 4.9h.

How high is the UV index in February in Johnston?

In Johnston, Iowa, the average daily maximum UV index in February is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in February
Johnston, IA

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).

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Average pressure in February
Johnston, IA

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).

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Average wind speed in February
Johnston, IA

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).

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Average humidity in February
Johnston, IA

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%).

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Average rainfall in February
Johnston, IA

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").

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Average rainfall days in February
Johnston, IA

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).

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Average snowfall in February
Johnston, IA

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").

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Average snowfall days in February
Johnston, IA

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).

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Average daylight in February /
Average sunshine in February
Johnston, IA

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).

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Average sunshine days in February
Johnston, IA

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).

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Average UV index in February
Johnston, IA

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).

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Average cloud cover in February
Johnston, IA

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).

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Average visibility in February
Johnston, IA

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).

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Johnston, Iowa, USA

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