Guymon, United States experiences average highs of 23°C (73°F) and lows of 10°C (50°F) throughout the year. The climate is relatively dry, with only 5 rainy days per month on average. Sunshine is abundant, averaging about 10 hours per day. Average highs have cooled by 0.6°C (1.1°F) across the available records.
Guymon, United States Weather & Climate 2026
Monthly climate averages for Guymon, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: May–Oct At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.6/10
Best: May, June, August, September, October
UV Index
6
High
Temperature 23°C / 10°C
Feels Like 20°C / 7°C
Rainy Days 5
Rainfall 35 mm
Sunshine 10 h
Humidity 50%
Wind Speed 26 km/h
Dew Point 6°C
Snow Days 2 days
Frost Days 10 days
Hottest Month
35°C
July
Avg Low22°C
Rain8days
Coldest Month
-2°C
January
Avg High11°C
Rain3days
Driest Month
2days
February
Avg High14°C
Avg Low-1°C
Windiest Month
31 km/h
April (Gusts 52)
Worst Time to Visit
Consider avoiding January, February, December due to less favorable weather conditions.
Sun Position
Sunrise 06:28
Daylight 14.7h
Sunset 21:07
Live conditions—
Guymon on the map · live conditions
Guymon, United States
- Continent
- Americas
- Country
- United States
- City
- Guymon
- Population
- 11.9K
- Elevation
- 952 m
- Coordinates
- 36.68°, -101.48°
Seasonal Breakdown
Spring
Mar–May
Avg High 23°C
Avg Low 9°C
Rain 6 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 33°C
Avg Low 21°C
Rain 8 days/mo
2/3 best months
Autumn
Sep–Nov
Avg High 24°C
Avg Low 11°C
Rain 4 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 12°C
Avg Low -1°C
Rain 2 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 11°C / -2°C . Feb: 14°C / -1°C . Mar: 20°C / 4°C . Apr: 23°C / 8°C . May: 27°C / 13°C . Jun: 32°C / 20°C . Jul: 35°C / 22°C . Aug: 33°C / 21°C . Sep: 31°C / 18°C . Oct: 24°C / 11°C . Nov: 17°C / 4°C . Dec: 13°C / 0°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 17 mm. Feb: 10 mm. Mar: 27 mm. Apr: 48 mm. May: 73 mm. Jun: 51 mm. Jul: 53 mm. Aug: 38 mm. Sep: 31 mm. Oct: 38 mm. Nov: 19 mm. Dec: 17 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 54%. Feb: 47%. Mar: 45%. Apr: 44%. May: 54%. Jun: 53%. Jul: 51%. Aug: 52%. Sep: 51%. Oct: 49%. Nov: 52%. Dec: 50%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 24 km/h . Feb: 27 km/h . Mar: 30 km/h . Apr: 31 km/h . May: 28 km/h . Jun: 27 km/h . Jul: 24 km/h . Aug: 23 km/h . Sep: 25 km/h . Oct: 26 km/h . Nov: 25 km/h . Dec: 25 km/h .
Sunshine
Sunshine
Sunshine: Jan: 8h. Feb: 9h. Mar: 10h. Apr: 11h. May: 11h. Jun: 12h. Jul: 13h. Aug: 12h. Sep: 11h. Oct: 9h. Nov: 8h. Dec: 8h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 5. Mar: UV 6. Apr: UV 7. May: UV 8. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 7. Oct: UV 5. Nov: UV 4. Dec: UV 3.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 3 days. Feb: 3 days. Mar: 2 days. Apr: 1 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 1 days. Nov: 1 days. Dec: 2 days.
Climate Trends
Average highs have cooled by 0.6°C (1.1°F) across the available records. Average rainfall is trending wetter by about 14 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 33°C | Jul · 35°C |
| Coldest month | Jan 2025 · -4°C | Jan · -2°C |
| Wettest month | Jul 2025 · 125 mm | May · 73 mm |
| Windiest month | Mar 2025 · 33 km/h | Apr · 31 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Fair April
Good May best
Excellent June best
Excellent July
Good August best
Excellent September best
Excellent October best
Excellent November
Fair December
Poor | 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 |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Guymon are May, June, August, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Guymon, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Guymon is July, with average daytime highs of 35°C (94°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Guymon is January, with average overnight lows of -2°C (28°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Guymon is May, averaging 73mm of precipitation across 9 rainy days. An umbrella or waterproof jacket is essential.
Guymon receives approximately 122 sunshine hours per year. The sunniest month is July with around 13 hours. Based on climate data for Guymon.
The least favorable months to visit Guymon are January, February, December, primarily due to less favorable weather conditions. For the best conditions, consider May, June, August, September, October instead.
The annual average UV index in Guymon is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Guymon is 50%, classified as dry. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Guymon receives snow. Months with snowfall average 2 snow days and 3 cm (1 in) of accumulation, with about 10 frost days during winter.
Average wind speeds in Guymon are 26 km/h (16 mph). The windiest month is April with peak winds reaching 31 km/h (19 mph) (gusts up to 52 km/h / 33 mph).
Guymon averages 11 clear-sky days per month with overall cloud cover around 38%. The clearest skies occur in October.
The annual average dew point in Guymon is 6°C (43°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Guymon has a Cold Semi-Arid climate, classified as BSk under the Köppen system. Arid climates have very low rainfall relative to temperature, with large swings between daytime heat and cool nights.
The 'feels like' temperature in Guymon ranges from 7°C (45°F) to 20°C (68°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
Yes, June is a great time to visit Guymon. It earns a climate score of 8.3/10 with Excellent.
For June in Guymon, pack Umbrella, Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses. With average highs of 32°C (90°F) and 8 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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