February Weather in Saint John, United States

Last updated: June 24, 2025

In February, the average temperature in Saint John, United States hovers around -2°C (29°F). While it can dip as low as -30°C (-21°F), temperatures can soar to a surprising 19°C (67°F) at times. Expect 71 mm (2.8 in) of precipitation over 11 days throughout the month, contributing to an average humidity of 83%. Stay prepared for the chilly and damp conditions as you explore this unique destination!

February Temperature in Saint John

In February in Saint John, the average temperature is -2°C (29°F), with maximums reaching 19°C (67°F) and minimums dropping as low as -30°C (-21°F). Travelers should be prepared for a wide range of temperatures, making layering essential for comfort during their visit.

February Weather in Saint John: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in Saint John, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint John, February typically has an average temperature of -2°C (29°F), with highs reaching up to 19°C (67°F) and lows dropping to around -30°C (-21°F).

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

February Precipitation in Saint John

In Saint John in February, the precipitation amount is 71 mm (2.8 in) distributed over 11 days.

February Precipitation Trends in Saint John

The chart displays monthly precipitation patterns in Saint John, 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 Saint John, February typically receives around 71 mm (2.8 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 Saint John

In Saint John in February, humidity is 83%. With an average temperature of -2°C (29°F), this humidity feels like a biting chill that seeps into your bones, making travel outside feel particularly uncomfortable and brisk, as the damp air enhances the cold sensation, leaving you longing for warmth and shelter.

February Average Humidity in Saint John

This chart illustrates the average monthly humidity levels in Saint John, 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 Saint John is approximately 83%, 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 Saint John

In Saint John in February, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Saint John for better planning.

Maximum UV Index Levels in Saint John for February

The chart shows the monthly maximum UV Index (UVI) for Saint John 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 Saint John typically reaches 4, which falls under the moderate exposure category.

Data source: Saint John 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 Saint John Compares to Other Months

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

This table compares monthly weather conditions in Saint John, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	70 mm (2.7 inches)	82%	moderate
February Weather	-2°C (29°F)	71 mm (2.8 inches)	83%	moderate
March Weather	4°C (39°F)	99 mm (3.9 inches)	84%	high
April Weather	9°C (48°F)	119 mm (4.7 inches)	85%	very high
May Weather	16°C (60°F)	162 mm (6.4 inches)	79%	very high
June Weather	22°C (71°F)	130 mm (5.1 inches)	82%	very high
July Weather	24°C (75°F)	103 mm (4.1 inches)	80%	very high
August Weather	23°C (73°F)	92 mm (3.6 inches)	81%	very high
September Weather	20°C (68°F)	74 mm (2.9 inches)	80%	very high
October Weather	13°C (56°F)	142 mm (5.6 inches)	82%	high
November Weather	5°C (40°F)	68 mm (2.7 inches)	88%	moderate
December Weather	1°C (34°F)	60 mm (2.4 inches)	84%	low