February Weather in Johnston, United States

Last updated: June 24, 2025

In Johnston, United States, the average temperature in February hovers around 12°C (54°F), with a minimum drop to -4°C (25°F) and a maximum rise to 28°C (83°F). Expect about 114 mm (4.5 in) of precipitation spread over 11 days, with an average humidity of 81%.

February Temperature in Johnston

In February in Johnston, the average temperature is 12°C (54°F). Maximum temperatures can reach 28°C (83°F), while minimums can drop as low as -4°C (25°F). This variation makes Johnston a destination where travelers should be prepared for both warm days and chilly nights.

February Weather in Johnston: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in Johnston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Johnston, February typically has an average temperature of 12°C (54°F), with highs reaching up to 28°C (83°F) and lows dropping to around -4°C (25°F).

Data source: Temperature data for Johnston generated using information from the Copernicus Climate Change Service.

February Precipitation in Johnston

In Johnston in February, the total precipitation amount is 114 mm (4.5 in) spread over 11 days.

February Precipitation Trends in Johnston

The chart displays monthly precipitation patterns in Johnston, with values for each month alongside February’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how February’s conditions compare to those of other months. In Johnston, February typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for February generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

February Humidity in Johnston

In Johnston in February humidity is 81%. With an average temperature of 12°C (54°F), this humidity feels like a damp blanket enveloping you, making travel sluggish and uncomfortable as you battle the stickiness while trying to enjoy your surroundings.

February Average Humidity in Johnston

This chart illustrates the average monthly humidity levels in Johnston, with February’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In February, average humidity in Johnston is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for February generated using information from the Copernicus Climate Change Service.

February UV Index in Johnston

In Johnston in February, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Johnston.

Maximum UV Index Levels in Johnston for February

The chart shows the monthly maximum UV Index (UVI) for Johnston in February, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In February, the maximum UV index in Johnston typically reaches 7, which falls under the high exposure category.

Data source: Johnston February UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How February Weather in Johnston Compares to Other Months

Weather in Johnston varies notably across the year, with each month offering distinct climate conditions. This page compares February’s weather to other months in Johnston, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Johnston, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	84 mm (3.3 inches)	86%	moderate
February Weather	12°C (54°F)	114 mm (4.5 inches)	81%	high
March Weather	14°C (58°F)	85 mm (3.4 inches)	81%	very high
April Weather	18°C (65°F)	115 mm (4.5 inches)	79%	very high
May Weather	23°C (74°F)	110 mm (4.3 inches)	75%	extreme
June Weather	26°C (79°F)	101 mm (4.0 inches)	75%	extreme
July Weather	28°C (82°F)	137 mm (5.4 inches)	80%	extreme
August Weather	27°C (80°F)	142 mm (5.6 inches)	81%	extreme
September Weather	25°C (77°F)	84 mm (3.3 inches)	83%	very high
October Weather	20°C (69°F)	80 mm (3.1 inches)	78%	very high
November Weather	13°C (55°F)	69 mm (2.7 inches)	85%	high
December Weather	10°C (51°F)	119 mm (4.7 inches)	87%	moderate