Guymon, United States — Weather in December 2026

Climate Overview

Guymon, United States in December has mild conditions, with highs averaging 12.6°C (55°F) and noticeably cooler mornings. Rain is rare, falling on about 2 days this month. Temperatures drop noticeably between day and night.

This month falls at the beginning of Winter.

Temperatures remain fairly steady throughout December, with daily highs around 12°C (54°F).

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

Expect around 8.3h of sunshine at the start of December, decreasing to 7.8h by the end.

The warmest days tend to fall around the 23th, averaging 13.8°C (57°F).

Compared to November, this month is about 5°C cooler with 0 fewer rainy days. Temperatures begin dropping heading into January.

Monthly December Averages

Temperature

13°C / 0°C

Feels Like

8°C / -5°C

Rain

2 days · 17 mm

Sunshine

8h / day

Humidity

50% — Moderate

Wind

25 km/h

Wind Direction

W (264°)

Gusts

42 km/h

Daylight

9.7 h

Cloud Cover

35%

Clear Sky Days

11.3

UV Index

3.2 — Moderate

Dew Point

-3°C — Dry

Moon Phase

Waxing Crescent · 31%

Snow Days

2 days · 3 cm

Frost Days

16 days

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 07:52

Daylight 9.7h

Sunset 17:32

Compare Months

3days (17 mm) Excellent

2days (10 mm) Excellent

2days (19 mm) Excellent

2days (17 mm) Excellent

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	11°C / -2°C	6°C / -7°C	3days (17 mm) Excellent	8h Good	54% Moderate	3.4 Moderate	Poor	View Details
February	14°C / -1°C	9°C / -6°C	2days (10 mm) Excellent	9.1h Good	47% Moderate	4.6 Moderate	Poor	View Details
March	20°C / 4°C	15°C / 0°C	4days (27 mm) Good	9.8h Good	45% Moderate	6.1 High	Fair	View Details
April	23°C / 8°C	19°C / 4°C	4days (48 mm) Good	10.8h Excellent	44% Moderate	6.9 High	Good	View Details
May best	27°C / 13°C	25°C / 11°C	9days (73 mm) Wet	11.2h Excellent	54% Moderate	7.7 Very High	Excellent	View Details
June best	32°C / 20°C	32°C / 18°C	8days (51 mm) Wet	12.4h Excellent	53% Moderate	8.1 Very High	Excellent	View Details
July	35°C / 22°C	35°C / 22°C	8days (53 mm) Wet	12.7h Excellent	51% Moderate	8.3 Very High	Good	View Details
August best	33°C / 21°C	33°C / 21°C	7days (38 mm) Good	11.7h Excellent	52% Moderate	7.7 Very High	Excellent	View Details
September best	31°C / 18°C	29°C / 16°C	5days (31 mm) Good	10.6h Excellent	51% Moderate	6.7 High	Excellent	View Details
October best	24°C / 11°C	20°C / 7°C	5days (38 mm) Good	9.2h Good	49% Moderate	5.3 High	Excellent	View Details
November	17°C / 4°C	13°C / 0°C	2days (19 mm) Excellent	8.2h Good	52% Moderate	3.8 Moderate	Fair	View Details
December	13°C / 0°C	8°C / -5°C	2days (17 mm) Excellent	8h Good	50% Moderate	3.2 Moderate	Poor	View Details

What to Wear

Bundle up with a warm coat, scarf, and closed-toe shoes. Thermal layers underneath give flexibility between indoors and outdoors.

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

Packing List

Layered clothingLight jacketComfortable walking shoes

Frequently Asked Questions

Expand all

Is December a good time to visit Guymon?

December is typically poor for visiting Guymon, with average highs of 13°C (55°F) and around 2 rainy days. Guymon, United States in December has mild conditions, with highs averaging 12.6°C (55°F) and noticeably cooler mornings

Does it rain a lot in Guymon in December?

Guymon typically sees around 2 rainy days in December with 17 mm (0.7 in) of total rainfall. An umbrella should suffice.

Does it get cold at night in Guymon in December?

Yes, nights in Guymon during December are cold, averaging 0°C (32°F). Pack warm layers and a coat for evenings.

What should I pack for Guymon in December?

With highs of 13°C (55°F) and lows of 0°C (32°F) in December, we recommend: Layered clothing, Light jacket, Comfortable walking shoes. Comfortable walking shoes are essential.

Is December among the best months weather-wise in Guymon?

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

What is the UV index in Guymon in December?

The average UV index in Guymon during December is 3 (moderate). Sunscreen and sunglasses are recommended during midday hours.

How many hours of daylight are there in Guymon in December?

Guymon gets approximately 10 hours of daylight per day in December, with around 8 hours of sunshine.

Does it snow in Guymon in December?

Yes, Guymon typically sees around 2 snow days in December with roughly 3 cm (1 in) of snowfall.

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