Today
Mostly clear throughout the day, high +55°, low +54°. Wind up to 16 mph. No rain expected.
Weather in Groton
United States · South Dakota · 45.4475, -98.0987
Today Now 10:25 PM
+55° Clear
Hourly forecast
Today10/17
Temperature°F
Cloudiness
Precipitation
Windmph
Wind gusts
Humidity
PressureinHg
Dew point°F
Visibilitymi
UV index
Forecast in words
Tomorrow
Tomorrow mostly clear, high +68°, low +45°, 13° warmer.
Week
Seven days ahead fall within +39°…+73°. Peak warmth: Thu, +73°. Coldest at night — Sat, +39°. Rain on Fri, Sat. Clear days — 6. Windiest day — Sat (23 mph). Second half of the week is warmer than the first.
Week vs norm
- Today 10/17 +55° −4° usually +59°
- Tomorrow 10/18 +68° +9° usually +59°
- Mon 10/19 +64° +6° usually +58°
- Tue 10/20 +68° +10° usually +58°
- Wed 10/21 +70° +13° usually +57°
- Thu 10/22 +73° +17° usually +56°
- Fri 10/23 +73° +18° usually +56°
- Sat 10/24 +68° +13° usually +55°
Difference between forecast daytime high and the 1991–2020 norm for this date.
This day, October 17
Today is cooler than usual for this date.
- Heat record +76° 2017
- Cold record +22° 2022
- Most precipitation 1.5 in 1998
- Strongest gust 42 mph 2024
Records for this calendar date, 1991-2024, ERA5 reanalysis.
Climate in Groton
Today is about 3° colder than usual for October.
| Month | Daytime / Nighttime | Average | Precipitation in |
|---|---|---|---|
| Jan | +22° / +7° | +14° | 0.9 |
| Feb | +28° / +11° | +18° | 0.9 |
| Mar | +41° / +23° | +31° | 1.4 |
| Apr | +56° / +34° | +44° | 2.6 |
| May | +70° / +48° | +58° | 3.6 |
| Jun | +79° / +59° | +68° | 4.1 |
| Jul | +85° / +64° | +73° | 3.0 |
| Aug | +83° / +62° | +72° | 3.0 |
| Sep | +76° / +54° | +64° | 2.5 |
| Oct | +60° / +41° | +49° | 2.2 |
| Nov | +42° / +27° | +33° | 1.1 |
| Dec | +28° / +14° | +20° | 1.1 |
Climatic normals for 1991–2025 years from ERA5-Land reanalysis.
Astronomical data
Sunrise / sunset
7:51 AM | 6:42 PM
Moon
2:53 PM | 11:17 PM
Moon phase
Waxing crescent 41%
Next solar eclipse
Calculating for this city…