Live Weather & Forecast
Weather in Groton
South Dakota, United States · Real-time conditions & 3-day outlook
14°C
Feels like 13°C
57°F / Feels 56°F
Clear
Groton, South Dakota
🌙 Nighttime
Updated: 2026-04-12 23:00
Humidity
59%
Wind
10.1 km/h NW
Wind Gust
21.2 km/h
Pressure
1002 mb
Visibility
16 km
UV Index
0
(Low)
Precipitation
0 mm
Cloud Cover
0%
Dew Point
8.8°C
Wind Degree
313°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
187.9 μg/m³
NO₂
3.5 μg/m³
O₃
52 μg/m³
SO₂
1.1 μg/m³
PM 2.5
9.4 μg/m³
PM 10
10.9 μg/m³
Today's Hourly Forecast
24-hour breakdown for Groton, South Dakota
12 AM
14°
Clear
1 AM
14°
Clear
2 AM
15°
Clear
3 AM
15°
Clear
4 AM
15°
Clear
5 AM
15°
Clear
6 AM
15°
Clear
7 AM
14°
Sunny
8 AM
15°
Patchy rain nearby
9 AM
16°
Sunny
10 AM
17°
Sunny
11 AM
17°
Sunny
12 PM
19°
Sunny
1 PM
20°
Sunny
2 PM
21°
Sunny
3 PM
22°
Sunny
4 PM
24°
Sunny
5 PM
25°
Sunny
6 PM
25°
Sunny
7 PM
23°
Sunny
8 PM
21°
Sunny
9 PM
19°
Clear
10 PM
17°
Clear
11 PM
14°
Clear
3-Day Forecast
Daily overview for Groton, South Dakota
Today
Sunny
26°
/
13°
🌧️ 0% chance of rain
💧 Avg. humidity: 64%
💨 Max wind: 31 km/h
🌧️ Total precip: 0.04 mm
☀️ UV Index: 1.5
🌅 Sunrise: 06:51 AM
🌇 Sunset: 08:14 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Overcast
13°
/
5°
🌧️ 0% chance of rain
💧 Avg. humidity: 89%
💨 Max wind: 24.1 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:50 AM
🌇 Sunset: 08:15 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Overcast
15°
/
4°
🌧️ 0% chance of rain
💧 Avg. humidity: 78%
💨 Max wind: 16.6 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:48 AM
🌇 Sunset: 08:17 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Best Time to Visit Groton
Plan your trip to Groton, 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 Groton?
Current conditions in Groton: Clear, temperature 14°C, humidity 59%.
What is the best time to visit Groton?
The best time to visit Groton is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Groton?
Groton is located at approximately 45.4° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Groton?
The wettest period in Groton is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Groton?
For visits to Groton during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Groton in?
Groton is located in United States, in the state of South Dakota.
What are the public holidays in Groton in 2026?
View the 2026 public holidays for Groton on our Holidays page.
What are the GPS coordinates used for the weather forecast in Groton?
The weather forecast for Groton uses coordinates 45.4473, -98.0988.