Derby, United States experiences average highs of 21°C (70°F) and lows of 10°C (50°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 cooled by 1.1°C (2.0°F) across the available records.
Derby, United States Weather & Climate 2026
Monthly climate averages for Derby, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Apr–Aug At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6/10
Best: May, September
UV Index
6
High
Temperature 21°C / 10°C
Feels Like 20°C / 8°C
Rainy Days 7
Rainfall 75 mm
Sunshine 9 h
Humidity 63%
Wind Speed 23 km/h
Dew Point 9°C
Snow Days 2 days
Frost Days 10 days
Hottest Month
33°C
July
Avg Low23°C
Rain9days
Coldest Month
-3°C
January
Avg High7°C
Rain5days
Driest Month
3days
December
Avg High10°C
Avg Low0°C
Windiest Month
28 km/h
April (Gusts 50)
Worst Time to Visit
Consider avoiding January, February, December due to very cold temperatures.
Sun Position
Sunrise 06:09
Daylight 14.7h
Sunset 20:53
Live conditions—
Derby on the map · live conditions
Derby, United States
- Continent
- Americas
- Country
- United States
- City
- Derby
- Population
- 23.5K
- Elevation
- 394 m
- Coordinates
- 37.55°, -97.27°
Seasonal Breakdown
Spring
Mar–May
Avg High 21°C
Avg Low 10°C
Rain 10 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 32°C
Avg Low 22°C
Rain 9 days/mo
Autumn
Sep–Nov
Avg High 22°C
Avg Low 12°C
Rain 6 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 9°C
Avg Low -2°C
Rain 4 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: 7°C / -3°C . Feb: 10°C / -1°C . Mar: 18°C / 5°C . Apr: 22°C / 9°C . May: 25°C / 15°C . Jun: 31°C / 21°C . Jul: 33°C / 23°C . Aug: 32°C / 22°C . Sep: 29°C / 19°C . Oct: 23°C / 12°C . Nov: 15°C / 5°C . Dec: 10°C / 0°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 38 mm. Feb: 27 mm. Mar: 64 mm. Apr: 101 mm. May: 180 mm. Jun: 105 mm. Jul: 73 mm. Aug: 76 mm. Sep: 75 mm. Oct: 91 mm. Nov: 46 mm. Dec: 29 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 65%. Feb: 61%. Mar: 59%. Apr: 58%. May: 69%. Jun: 64%. Jul: 63%. Aug: 63%. Sep: 63%. Oct: 59%. Nov: 65%. Dec: 64%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 22 km/h . Feb: 24 km/h . Mar: 27 km/h . Apr: 28 km/h . May: 23 km/h . Jun: 22 km/h . Jul: 19 km/h . Aug: 19 km/h . Sep: 20 km/h . Oct: 24 km/h . Nov: 23 km/h . Dec: 23 km/h .
Sunshine
Sunshine
Sunshine: Jan: 7h. Feb: 8h. Mar: 9h. Apr: 10h. May: 10h. Jun: 12h. Jul: 12h. Aug: 12h. Sep: 10h. Oct: 9h. Nov: 8h. Dec: 7h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 6. Apr: UV 6. May: UV 7. Jun: UV 8. Jul: UV 8. Aug: UV 7. Sep: UV 6. Oct: UV 5. Nov: UV 3. 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: 1 days. Apr: 0 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 1 days. Dec: 2 days.
Climate Trends
Average highs have cooled by 1.1°C (2.0°F) across the available records. Average rainfall is trending wetter by about 27 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 32°C | Jul · 33°C |
| Coldest month | Jan 2025 · -7°C | Jan · -3°C |
| Wettest month | May 2025 · 297 mm | May · 180 mm |
| Windiest month | Mar 2025 · 29 km/h | Apr · 28 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Fair April
Good May best
Excellent June
Good July
Fair August
Good September best
Excellent October
Good November
Fair December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 7°C / -3°C | 3°C / -8°C | 5days (38 mm) Good | 7h Good | 65% Muggy | 3 Moderate | Poor | View Details |
| February | 10°C / -1°C | 6°C / -6°C | 4days (27 mm) Good | 8h Good | 61% Muggy | 4.2 Moderate | Poor | View Details |
| March | 18°C / 5°C | 14°C / 1°C | 7days (64 mm) Good | 8.9h Good | 59% Moderate | 5.7 High | Fair | View Details |
| April | 22°C / 9°C | 19°C / 6°C | 9days (101 mm) Wet | 9.6h Good | 58% Moderate | 6.3 High | Good | View Details |
| May best | 25°C / 15°C | 25°C / 13°C | 13days (180 mm) Wet | 9.8h Good | 69% Muggy | 7 High | Excellent | View Details |
| June | 31°C / 21°C | 33°C / 22°C | 9days (105 mm) Wet | 12.1h Excellent | 64% Muggy | 7.9 Very High | Good | View Details |
| July | 33°C / 23°C | 36°C / 25°C | 9days (73 mm) Wet | 12.3h Excellent | 63% Muggy | 7.9 Very High | Fair | View Details |
| August | 32°C / 22°C | 34°C / 24°C | 9days (76 mm) Wet | 11.5h Excellent | 63% Muggy | 7.4 Very High | Good | View Details |
| September best | 29°C / 19°C | 30°C / 19°C | 7days (75 mm) Good | 10.1h Excellent | 63% Muggy | 6.1 High | Excellent | View Details |
| October | 23°C / 12°C | 20°C / 9°C | 7days (91 mm) Good | 8.7h Good | 59% Moderate | 4.7 Moderate | Good | View Details |
| November | 15°C / 5°C | 11°C / 1°C | 5days (46 mm) Good | 7.6h Good | 65% Muggy | 3.4 Moderate | Fair | View Details |
| December | 10°C / 0°C | 6°C / -5°C | 3days (29 mm) Excellent | 7.2h Good | 64% Muggy | 2.8 Moderate | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Derby are May, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Derby, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Derby is July, with average daytime highs of 33°C (92°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Derby is January, with average overnight lows of -3°C (26°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Derby is May, averaging 180mm of precipitation across 13 rainy days. An umbrella or waterproof jacket is essential.
Derby receives approximately 113 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Derby.
The least favorable months to visit Derby are January, February, December, primarily due to very cold temperatures. For the best conditions, consider May, September instead.
The annual average UV index in Derby is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Derby is 63%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Derby receives snow. Months with snowfall average 2 snow days and 4 cm (2 in) of accumulation, with about 10 frost days during winter.
Average wind speeds in Derby are 23 km/h (14 mph). The windiest month is April with peak winds reaching 28 km/h (17 mph) (gusts up to 50 km/h / 31 mph).
Derby averages 9 clear-sky days per month with overall cloud cover around 45%. The clearest skies occur in October.
The annual average dew point in Derby is 9°C (48°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Derby has a Humid Subtropical climate, classified as Cfa 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 Derby ranges from 8°C (46°F) to 20°C (68°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Derby. It earns a climate score of 7.4/10 with Good.
For June in Derby, pack Umbrella, Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses. With average highs of 31°C (88°F) and 9 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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