Willmar, United States — Weather in May 2027

Climate Overview

Willmar, United States in May has warm conditions, with highs averaging 20.6°C (69°F). Rain falls on about 12 days this month. Temperatures drop noticeably between day and night.

This month falls at the end of Spring.

Daily highs in May gradually rise from around 18°C (64°F) at the start to 23°C (74°F) by month's end.

Rainfall is heaviest during the middle of the month, while the first third tends to be drier.

Expect around 10.6h of sunshine at the start of May, increasing to 11.7h by the end.

The warmest days tend to fall around the 31th, averaging 23.9°C (75°F).

Compared to April, this month is about 9°C warmer with 2 more rainy days. Temperatures will rise further into June.

Monthly May Averages

Temperature

21°C / 10°C

Feels Like

19°C / 7°C

Rain

12 days · 107 mm

Sunshine

10.5h / day

Humidity

64% — Moderate

Wind

22 km/h

Wind Direction

SE (137°)

Gusts

43 km/h

Daylight

14.9 h

Cloud Cover

55%

Clear Sky Days

5.5

UV Index

6.4 — High

Dew Point

8°C — Dry

Moon Phase

Waxing Gibbous · 66%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 05:52

Daylight 14.9h

Sunset 20:44

What to Expect

Daytime temperatures around 21°C (69°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Rain usually comes in shorter passing showers rather than all-day rain.

1 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	-5°C / -13°C	-10°C / -19°C	4days (18 mm) Good	5.7h Fair	78% Humid	2.2 Moderate	Poor	View Details
February	-2°C / -13°C	-8°C / -18°C	5days (20 mm) Good	7.6h Good	72% Muggy	3.3 Moderate	Poor	View Details
March	6°C / -4°C	1°C / -10°C	6days (52 mm) Good	8.3h Good	69% Muggy	4.7 Moderate	Poor	View Details
April	12°C / 1°C	8°C / -3°C	10days (85 mm) Wet	8.8h Good	66% Muggy	5.3 High	Poor	View Details
May	21°C / 10°C	19°C / 7°C	12days (107 mm) Wet	10.5h Excellent	64% Muggy	6.4 High	Good	View Details
June best	27°C / 16°C	27°C / 16°C	11days (110 mm) Wet	12.3h Excellent	65% Muggy	6.7 High	Excellent	View Details
July best	28°C / 18°C	30°C / 19°C	10days (104 mm) Wet	12.6h Excellent	71% Muggy	7.1 Very High	Excellent	View Details
August best	26°C / 17°C	28°C / 18°C	10days (123 mm) Wet	11.2h Excellent	74% Muggy	6.3 High	Excellent	View Details
September best	23°C / 14°C	23°C / 13°C	9days (90 mm) Wet	9.4h Good	70% Muggy	5.2 High	Excellent	View Details
October	15°C / 6°C	11°C / 3°C	8days (72 mm) Wet	7.4h Good	67% Muggy	3.5 Moderate	Fair	View Details
November	6°C / -2°C	2°C / -7°C	6days (37 mm) Good	5.9h Fair	71% Muggy	2.3 Moderate	Poor	View Details
December	-2°C / -9°C	-7°C / -15°C	6days (40 mm) Good	5h Fair	76% Humid	1.9 Low	Poor	View Details

What to Wear

Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.

Temperatures drop significantly at night, so pack layers you can add or remove throughout the day.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

Warm evening layerUmbrellaWaterproof jacketSunscreen (SPF 30+)SunglassesComfortable walking shoes

Frequently Asked Questions

Expand all

Is May a good time to visit Willmar?

May is typically good for visiting Willmar, with average highs of 21°C (69°F) and around 12 rainy days. Willmar, United States in May has warm conditions, with highs averaging 20.6°C (69°F). Rain falls on about 12 days this

Does it rain a lot in Willmar in May?

Willmar typically sees around 12 rainy days in May with 107 mm (4.2 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Willmar in May?

Nights in Willmar during May are cool at around 10°C (49°F). Bring a jacket or sweater for evenings.

What should I pack for Willmar in May?

With highs of 21°C (69°F) and lows of 10°C (49°F) in May, we recommend: Warm evening layer, Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses. Comfortable walking shoes are essential.

Is May among the best months weather-wise in Willmar?

May is not the most favourable month weather-wise in Willmar. Consider visiting during months with milder temperatures or less rainfall for a better experience.

What is the UV index in Willmar in May?

The average UV index in Willmar during May is 6 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.

How many hours of daylight are there in Willmar in May?

Willmar gets approximately 15 hours of daylight per day in May, with around 11 hours of sunshine.

Does it snow in Willmar in May?

Snow is uncommon in Willmar during May based on 10-year climate averages.

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