May Weather in Old Washington, United States

Last updated: June 24, 2025

In May, the average temperature in Old Washington, United States is a pleasant 19°C (66°F). Expect a temperature range with lows dipping to 0°C (33°F) and highs reaching up to 32°C (90°F). The region experiences 128 mm (5.1 in) of precipitation over about 14 days, contributing to an average humidity of 81%. Plan accordingly for a mix of delightful warmth and refreshing moisture!

May Temperature in Old Washington

In May, in Old Washington, the average temperature is 19°C (66°F). The maximum can reach 32°C (90°F), and the minimum can be as low as 0°C (33°F). Therefore, it's advisable to pack layers and be prepared for a range of weather conditions while traveling.

May Weather in Old Washington: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Old Washington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Old Washington, May typically has an average temperature of 19°C (66°F), with highs reaching up to 32°C (90°F) and lows dropping to around 0°C (33°F).

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

May Precipitation in Old Washington

In Old Washington in May, the precipitation amount is 128 mm (5.1 in) spread over 14 days.

May Precipitation Trends in Old Washington

The chart displays monthly precipitation patterns in Old Washington, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Old Washington, May typically receives around 128 mm (5.1 inches) of precipitation spread over approximately 14 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Old Washington

In Old Washington in May, humidity is 81%. With an average temperature of 19°C (66°F), this humidity feels like a warm, heavy blanket enveloping you, making travel feel both muggy and slightly stifling, often leading to a need for frequent breaks in the shade.

May Average Humidity in Old Washington

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

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

May UV Index in Old Washington

In Old Washington in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Old Washington.

Maximum UV Index Levels in Old Washington for May

The chart shows the monthly maximum UV Index (UVI) for Old Washington in May, 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 May, the maximum UV index in Old Washington typically reaches 10, which falls under the very high exposure category.

Data source: Old Washington May 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 May Weather in Old Washington Compares to Other Months

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

This table compares monthly weather conditions in Old Washington, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (35°F)	92 mm (3.6 inches)	88%	moderate
February Weather	4°C (40°F)	131 mm (5.1 inches)	88%	moderate
March Weather	8°C (47°F)	119 mm (4.7 inches)	87%	high
April Weather	13°C (55°F)	136 mm (5.4 inches)	85%	very high
May Weather	19°C (66°F)	128 mm (5.1 inches)	81%	very high
June Weather	23°C (73°F)	173 mm (6.8 inches)	82%	very high
July Weather	25°C (77°F)	114 mm (4.5 inches)	81%	very high
August Weather	24°C (75°F)	95 mm (3.7 inches)	73%	very high
September Weather	21°C (71°F)	114 mm (4.5 inches)	73%	very high
October Weather	15°C (60°F)	107 mm (4.2 inches)	78%	high
November Weather	7°C (45°F)	83 mm (3.3 inches)	89%	moderate
December Weather	4°C (40°F)	121 mm (4.8 inches)	87%	moderate