Keller, United States experiences average highs of 25°C (77°F) and lows of 15°C (59°F) throughout the year. The climate is relatively dry, with only 7 rainy days per month on average. Sunshine is abundant, averaging about 9 hours per day. Average highs have warmed by 0.9°C (1.6°F) across the available records.
Keller, United States Weather & Climate 2026
Monthly climate averages for Keller, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Feb–Aug At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.6/10
Best: April, May, September, October
UV Index
6
High
Temperature 25°C / 15°C
Feels Like 25°C / 14°C
Rainy Days 7
Rainfall 77 mm
Sunshine 9 h
Humidity 64%
Wind Speed 19 km/h
Dew Point 13°C
Snow Days 1 days
Frost Days 3 days
Hottest Month
35°C
July
Avg Low26°C
Rain5days
Coldest Month
3°C
January
Avg High14°C
Rain6days
Driest Month
5days
July
Avg High35°C
Avg Low26°C
Windiest Month
23 km/h
April (Gusts 46)
Worst Time to Visit
Consider avoiding July, August due to extreme heat, oppressive humidity.
Sun Position
Sunrise 06:21
Daylight 14.3h
Sunset 20:40
Live conditions—
Keller on the map · live conditions
Keller, United States
- Continent
- Americas
- Country
- United States
- City
- Keller
- Population
- 45.8K
- Elevation
- 216 m
- Coordinates
- 32.93°, -97.25°
Seasonal Breakdown
Spring
Mar–May
Avg High 25°C
Avg Low 15°C
Rain 10 days/mo
2/3 best months
Summer
Jun–Aug
Avg High 34°C
Avg Low 25°C
Rain 7 days/mo
Autumn
Sep–Nov
Avg High 26°C
Avg Low 16°C
Rain 6 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 15°C
Avg Low 5°C
Rain 7 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: 14°C / 3°C . Feb: 17°C / 6°C . Mar: 22°C / 11°C . Apr: 25°C / 14°C . May: 29°C / 19°C . Jun: 33°C / 23°C . Jul: 35°C / 26°C . Aug: 35°C / 26°C . Sep: 32°C / 22°C . Oct: 27°C / 16°C . Nov: 20°C / 10°C . Dec: 16°C / 7°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 54 mm. Feb: 71 mm. Mar: 90 mm. Apr: 108 mm. May: 139 mm. Jun: 77 mm. Jul: 32 mm. Aug: 74 mm. Sep: 57 mm. Oct: 99 mm. Nov: 69 mm. Dec: 55 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 64%. Feb: 66%. Mar: 63%. Apr: 64%. May: 70%. Jun: 67%. Jul: 59%. Aug: 58%. Sep: 62%. Oct: 58%. Nov: 67%. Dec: 66%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 20 km/h . Feb: 21 km/h . Mar: 23 km/h . Apr: 23 km/h . May: 21 km/h . Jun: 18 km/h . Jul: 17 km/h . Aug: 16 km/h . Sep: 15 km/h . Oct: 19 km/h . Nov: 19 km/h . Dec: 19 km/h .
Sunshine
Sunshine
Sunshine: Jan: 7h. Feb: 7h. Mar: 9h. Apr: 9h. May: 10h. Jun: 12h. Jul: 13h. Aug: 12h. Sep: 10h. Oct: 9h. Nov: 8h. Dec: 7h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 4. Feb: UV 5. Mar: UV 6. Apr: UV 7. May: UV 7. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 7. Oct: UV 6. 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: 1 days. Feb: 1 days. Mar: 0 days. Apr: 0 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 0 days. Dec: 0 days.
Climate Trends
Average highs have warmed by 0.9°C (1.6°F) across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Aug 2025 · 35°C | Jul · 35°C |
| Coldest month | Jan 2025 · 1°C | Jan · 3°C |
| Wettest month | Apr 2025 · 122 mm | May · 139 mm |
| Windiest month | Mar 2025 · 26 km/h | Apr · 23 km/h |
Month-by-Month Weather Table
January
Fair 
February
Fair March
Good April best
Excellent May best
Excellent June
Fair July
Poor August
Poor September best
Excellent October best
Excellent November
Good December
Fair | 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 |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Keller are April, May, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Keller, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Keller is July, with average daytime highs of 35°C (95°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Keller is January, with average overnight lows of 3°C (38°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Keller is May, averaging 139mm of precipitation across 12 rainy days. An umbrella or waterproof jacket is essential.
Keller receives approximately 112 sunshine hours per year. The sunniest month is July with around 13 hours. Based on climate data for Keller.
The least favorable months to visit Keller are July, August, primarily due to extreme heat, oppressive humidity. For the best conditions, consider April, May, September, October instead.
The annual average UV index in Keller is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Keller is 64%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Keller receives snow. Months with snowfall average 1 snow days and 2 cm (1 in) of accumulation, with about 3 frost days during winter.
Average wind speeds in Keller are 19 km/h (12 mph). The windiest month is April with peak winds reaching 23 km/h (14 mph) (gusts up to 46 km/h / 29 mph).
Keller averages 9 clear-sky days per month with overall cloud cover around 46%. The clearest skies occur in October.
The annual average dew point in Keller is 13°C (55°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Keller has a Hot-Summer Mediterranean climate, classified as Csa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Keller ranges from 14°C (57°F) to 25°C (77°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
June is not the best time to visit Keller, with a climate score of 5.4/10. Consider visiting during April, May, September, October instead for better conditions.
For June in Keller, pack Umbrella, Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses. With average highs of 33°C (91°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.
Last updated: