June Weather in Sumner, United States

Last updated: June 24, 2025

In Sumner, United States, the average temperature in June is a mild 22°C (72°F). Expect a range where the minimum can drop to 8°C (47°F) and the maximum can soar to 34°C (94°F). During this time, you'll encounter about 138 mm (5.4 in) of precipitation over 11 days, accompanied by a high humidity level of 79%. Plan accordingly to make the most of your visit!

June Temperature in Sumner

In June in Sumner, the average temperature is 22°C (72°F). The maximum can reach 34°C (94°F), and the minimum can be as low as 8°C (47°F). This makes Sumner an ideal destination for travelers seeking a comfortable climate with a mix of warm and cooler days.

June Weather in Sumner: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Sumner, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sumner, June typically has an average temperature of 22°C (72°F), with highs reaching up to 34°C (94°F) and lows dropping to around 8°C (47°F).

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

June Precipitation in Sumner

In Sumner in June, the precipitation amount is 138 mm (5.4 in) distributed over 11 days.

June Precipitation Trends in Sumner

The chart displays monthly precipitation patterns in Sumner, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Sumner, June typically receives around 138 mm (5.4 inches) of precipitation spread over approximately 11 days.

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

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Millimeters (mm) Inches (in)

June Humidity in Sumner

In Sumner in June humidity is 79%. With an average temperature of 22°C (72°F), this humidity feels like you are enveloped in a warm, heavy blanket, making it feel considerably hotter and adding a layer of stickiness to your skin as you navigate through the streets.

June Average Humidity in Sumner

This chart illustrates the average monthly humidity levels in Sumner, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Sumner is approximately 79%, offering insight into how humid the weather typically is during this month.

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

June UV Index in Sumner

In Sumner in June, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Sumner.

Maximum UV Index Levels in Sumner for June

The chart shows the monthly maximum UV Index (UVI) for Sumner in June, 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 June, the maximum UV index in Sumner typically reaches 11, which falls under the extreme exposure category.

Data source: Sumner June 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 June Weather in Sumner Compares to Other Months

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

This table compares monthly weather conditions in Sumner, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	40 mm (1.6 inches)	84%	moderate
February Weather	-6°C (21°F)	52 mm (2.0 inches)	85%	moderate
March Weather	2°C (36°F)	68 mm (2.7 inches)	84%	moderate
April Weather	8°C (46°F)	75 mm (3.0 inches)	83%	very high
May Weather	16°C (60°F)	176 mm (6.9 inches)	75%	very high
June Weather	22°C (72°F)	138 mm (5.4 inches)	79%	extreme
July Weather	23°C (75°F)	106 mm (4.2 inches)	75%	very high
August Weather	21°C (71°F)	102 mm (4.0 inches)	69%	very high
September Weather	18°C (66°F)	129 mm (5.1 inches)	74%	very high
October Weather	10°C (51°F)	137 mm (5.4 inches)	79%	moderate
November Weather	2°C (36°F)	49 mm (1.9 inches)	88%	moderate
December Weather	-2°C (29°F)	36 mm (1.4 inches)	82%	moderate