Keller, United States — Weather in May 2027

Climate Overview

Keller, United States in May has hot conditions, with highs reaching 28.5°C (83°F) and afternoons the warmest part of the day. Rain falls on about 12 days this month.

This month falls at the end of Spring.

Daily highs in May gradually rise from around 27°C (80°F) at the start to 30°C (86°F) by month's end.

May sees fairly even rainfall, totalling about 138 mm across the month.

Expect around 9.9h of sunshine at the start of May, increasing to 10.9h by the end.

Wind speeds ease off through the month, from 21 km/h (13 mph) to 18 km/h (11 mph).

The warmest days tend to fall around the 28th, averaging 30°C (86°F).

Compared to April, this month is about 4°C warmer with 3 more rainy days. Temperatures will rise further into June.

Monthly May Averages

Temperature

29°C / 19°C

Feels Like

30°C / 19°C

Rain

12 days · 139 mm

Sunshine

10.1h / day

Humidity

70% — Muggy

Wind

21 km/h

Wind Direction

SE (139°)

Gusts

42 km/h

Daylight

13.9 h

Cloud Cover

56%

Clear Sky Days

5.6

UV Index

7.4 — Very High

Dew Point

18°C — Humid

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 06:31

Daylight 13.9h

Sunset 20:22

What to Expect

Daytime temperatures around 29°C (83°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Rain most often builds later in the day, so mornings are typically the driest window and afternoon showers are more likely.

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	14°C / 3°C	11°C / -1°C	6days (54 mm) Good	7.3h Good	64% Muggy	3.6 Moderate	Fair	View Details
February	17°C / 6°C	14°C / 2°C	8days (71 mm) Wet	7h Good	66% Muggy	4.6 Moderate	Fair	View Details
March	22°C / 11°C	20°C / 8°C	9days (90 mm) Wet	8.5h Good	63% Muggy	6.1 High	Good	View Details
April best	25°C / 14°C	24°C / 12°C	9days (108 mm) Wet	9.2h Good	64% Muggy	6.6 High	Excellent	View Details
May best	29°C / 19°C	30°C / 19°C	12days (139 mm) Wet	10.1h Excellent	70% Muggy	7.4 Very High	Excellent	View Details
June	33°C / 23°C	36°C / 26°C	8days (77 mm) Wet	11.9h Excellent	67% Muggy	8 Very High	Fair	View Details
July	35°C / 26°C	39°C / 29°C	5days (32 mm) Good	12.5h Excellent	59% Moderate	8.1 Very High	Poor	View Details
August	35°C / 26°C	38°C / 28°C	7days (74 mm) Good	11.6h Excellent	58% Moderate	7.8 Very High	Poor	View Details
September best	32°C / 22°C	34°C / 24°C	6days (57 mm) Good	10.1h Excellent	62% Muggy	6.7 High	Excellent	View Details
October best	27°C / 16°C	27°C / 15°C	6days (99 mm) Good	9h Good	58% Moderate	5.5 High	Excellent	View Details
November	20°C / 10°C	19°C / 8°C	6days (69 mm) Good	7.6h Good	67% Muggy	4 Moderate	Good	View Details
December	16°C / 7°C	14°C / 3°C	6days (55 mm) Good	6.9h Fair	66% Muggy	3.4 Moderate	Fair	View Details

What to Wear

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.

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

Packing List

UmbrellaWaterproof jacketBreathable clothingSunscreen (SPF 30+)Sun hatSunglassesComfortable walking shoes

Frequently Asked Questions

Expand all

Is May a good time to visit Keller?

May is typically excellent for visiting Keller, with average highs of 29°C (83°F) and around 12 rainy days. Keller, United States in May has hot conditions, with highs reaching 28.5°C (83°F) and afternoons the warmest part of th

Does it rain a lot in Keller in May?

Keller typically sees around 12 rainy days in May with 139 mm (5.5 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Keller in May?

Nights stay pleasantly warm in Keller during May, around 19°C (66°F). Light evening wear is sufficient.

What should I pack for Keller in May?

With highs of 29°C (83°F) and lows of 19°C (66°F) in May, we recommend: Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. Comfortable walking shoes are essential.

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

Yes, May offers some of the best weather conditions in Keller with comfortable temperatures and lower chances of rain.

What is the UV index in Keller in May?

The average UV index in Keller during May is 7 (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 Keller in May?

Keller gets approximately 14 hours of daylight per day in May, with around 10 hours of sunshine.

Does it snow in Keller in May?

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

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