Live Weather & Forecast
Weather in Derby
Connecticut, United States · Real-time conditions & 3-day outlook
9°C
Feels like 9°C
48°F / Feels 48°F
Sunny
Derby, Connecticut
🌞 Daytime
Updated: 2026-04-12 10:30
Humidity
37%
Wind
4.7 km/h SE
Wind Gust
5.4 km/h
Pressure
1034 mb
Visibility
16 km
UV Index
3.1
(Moderate)
Precipitation
0 mm
Cloud Cover
0%
Dew Point
-5.7°C
Wind Degree
126°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
192.9 μg/m³
NO₂
5.7 μg/m³
O₃
100 μg/m³
SO₂
3.1 μg/m³
PM 2.5
7 μg/m³
PM 10
8.3 μg/m³
Weather Alerts 1
Met
· Minor · Expected
Frost Advisory issued April 11 at 1:23PM EDT until April 12 at 9:00AM EDT by NWS Upton NY
* WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...In Connecticut, Southern Middlesex and Southern New London Counties. In New Jersey, Western Bergen and Western Passaic Counties. In New York, Northeast Suffolk, Northern Westchester, Rockland, and Southeast Suffolk Counties. * WHEN...From midnight tonight to 9 AM EDT Sunday. * IMPACTS...Frost could harm sensitive outdo...
Take steps now to protect tender plants from the cold.
Today's Hourly Forecast
24-hour breakdown for Derby, Connecticut
12 AM
7°
Clear
1 AM
6°
Clear
2 AM
6°
Clear
3 AM
5°
Clear
4 AM
4°
Clear
5 AM
3°
Clear
6 AM
3°
Clear
7 AM
4°
Sunny
8 AM
7°
Sunny
9 AM
8°
Sunny
10 AM
9°
Sunny
11 AM
12°
Sunny
12 PM
13°
Sunny
1 PM
13°
Sunny
2 PM
15°
Sunny
3 PM
14°
Sunny
4 PM
15°
Sunny
5 PM
13°
Sunny
6 PM
11°
Cloudy
7 PM
10°
Partly Cloudy
8 PM
9°
Overcast
9 PM
8°
Clear
10 PM
8°
Partly Cloudy
11 PM
7°
Cloudy
3-Day Forecast
Daily overview for Derby, Connecticut
Today
Sunny
17°
/
3°
🌧️ 0% chance of rain
💧 Avg. humidity: 46%
💨 Max wind: 15.8 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:17 AM
🌇 Sunset: 07:30 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Overcast
18°
/
7°
🌧️ 0% chance of rain
💧 Avg. humidity: 86%
💨 Max wind: 23.8 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 0.8
🌅 Sunrise: 06:16 AM
🌇 Sunset: 07:31 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Sunny
25°
/
16°
🌧️ 0% chance of rain
💧 Avg. humidity: 73%
💨 Max wind: 13.7 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.8
🌅 Sunrise: 06:14 AM
🌇 Sunset: 07:32 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Best Time to Visit Derby
Plan your trip to Derby, United States around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Derby?
Current conditions in Derby: Sunny, temperature 9°C, humidity 37%.
What is the best time to visit Derby?
The best time to visit Derby is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Derby?
Derby is located at approximately 41.3° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Derby?
The wettest period in Derby is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Derby?
For visits to Derby during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Derby in?
Derby is located in United States, in the state of Connecticut.
What are the public holidays in Derby in 2026?
View the 2026 public holidays for Derby on our Holidays page.
What are the GPS coordinates used for the weather forecast in Derby?
The weather forecast for Derby uses coordinates 41.3224, -73.089.