As of 14:48 CDT

Weather in Groton, SD

52°

Groton, Wednesday, 28 October, 14:48

Overcast. Feels like 50°. High 53°, low 43°.

Pressure29.91 inHg

Wind9.8 mph NW

Humidity72%

Visibility6.2 mi

Dew point43°

See detailed hourly forecast

Monthly outlook for Groton, SD: average high 52.4°, average low 39.8°. That is 3.3° above the climate normal for October. Precipitation is expected on 3 days (about 1.6 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 1 November (65.9°), the coolest 11 November (25.3°).

52.4°/39.8°

Average high / low

+3.3°

Above normal

3 / 3

Wet days / normal

1.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
28 October – 6 November	56.6°	48.8°	+4.3°
7 November – 16 November	45.3°	42.3°	+1.7°
17 November – 26 November	at normal	36.6°	—

October records over 66 years

87.6°3 October 2025All-time high

0.1°26 October 2020All-time low

Thu, 2953° / 36°

53 °

Groton, Thursday, 29 October

Overcast. High 53°, low 36°.

Pressure30.24 inHg

Wind4.1 mph NE

Humidity62%

Visibility6.2 mi

Dew point37°

Fri, 3059° / 38°

59 °

Groton, Friday, 30 October

Overcast. High 59°, low 38°.

Pressure30.27 inHg

Wind6 mph NE

Humidity70%

Visibility6.2 mi

Dew point42°

Sat, 3159° / 44°

59 °

Groton, Saturday, 31 October

Overcast. High 59°, low 44°.

Pressure30.21 inHg

Wind5.5 mph SE

Humidity75%

Visibility6.2 mi

Dew point46°

Sun, 0166° / 56°

66 °

Groton, Sunday, 1 November

Overcast. High 66°, low 56°.

Pressure30.09 inHg

Wind12.9 mph S

Humidity72%

Visibility6.2 mi

Dew point53°

Mon, 0259° / 57°

1.36

59 °

Groton, Monday, 2 November

Rain. High 59°, low 57°.

Pressure29.74 inHg

Wind11.7 mph S

Humidity93%

Visibility—

Dew point57°

Tue, 0357° / 49°

0.02

57 °

Groton, Tuesday, 3 November

Light rain. High 57°, low 49°.

Pressure30.15 inHg

Wind13.3 mph NE

Humidity72%

Visibility—

Dew point46°

Wed, 0461° / 44°

61 °

Groton, Wednesday, 4 November

Clear. High 61°, low 44°.

Pressure30.03 inHg

Wind9.2 mph N

Humidity62%

Visibility—

Dew point43°

Thu, 0555° / 41°

55 °

Groton, Thursday, 5 November

Clear. High 55°, low 41°.

Pressure29.97 inHg

Wind7.9 mph NE

Humidity37%

Visibility—

Dew point25°

Fri, 0645° / 36°

45 °

Groton, Friday, 6 November

Overcast. High 45°, low 36°.

Pressure30.18 inHg

Wind11.2 mph NE

Humidity38%

Visibility—

Dew point19°

Sat, 0746° / 28°

46 °

Groton, Saturday, 7 November

Clear. High 46°, low 28°.

Pressure30.36 inHg

Wind6.5 mph NE

Humidity48%

Visibility—

Dew point22°

Sun, 0848° / 35°

0.11

48 °

Groton, Sunday, 8 November

Light rain. High 48°, low 35°.

Pressure30.00 inHg

Wind17.7 mph S

Humidity77%

Visibility—

Dew point40°

Mon, 0950° / 43°

0.11

50 °

Groton, Monday, 9 November

Light rain. High 50°, low 43°.

Pressure30.03 inHg

Wind16.2 mph N

Humidity92%

Visibility—

Dew point43°

Tue, 1039° / 30°

39 °

Groton, Tuesday, 10 November

Overcast. High 39°, low 30°.

Pressure30.39 inHg

Wind14.5 mph N

Humidity62%

Visibility—

Dew point26°

Wed, 1141° / 25°

41 °

Groton, Wednesday, 11 November

Overcast. High 41°, low 25°.

Pressure30.30 inHg

Wind11.4 mph S

Humidity40%

Visibility—

Dew point14°

Thu, 1248° / 32°

48 °

Groton, Thursday, 12 November

Overcast. High 48°, low 32°.

Pressure30.09 inHg

Wind15.3 mph S

Humidity41%

Visibility—

Dew point21°

From day 17 onward the outlook is built from 60-year climate statistics

Fri, 1343° / 27°

0.04

43 °

Groton, Friday, 13 November

Climate normal for this date — 60-year average.

Average high43°

Average low27°

Average precipitation0.04 in

Chance of precipitation20%

Record high68° (1999)

Record low2° (1986)

Sat, 1442° / 28°

0.02

42 °

Groton, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high42°

Average low28°

Average precipitation0.02 in

Chance of precipitation10%

Record high64° (2025)

Record low-3° (2014)

Sun, 1541° / 26°

0.02

41 °

Groton, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high41°

Average low26°

Average precipitation0.02 in

Chance of precipitation15%

Record high62° (2015)

Record low2° (2014)

Mon, 1642° / 26°

0.04

42 °

Groton, Monday, 16 November

Climate normal for this date — 60-year average.

Average high42°

Average low26°

Average precipitation0.04 in

Chance of precipitation12%

Record high66° (2001)

Record low-2° (2014)

Tue, 1740° / 27°

0.02

40 °

Groton, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high40°

Average low27°

Average precipitation0.02 in

Chance of precipitation13%

Record high65° (2001)

Record low6° (2014)

Wed, 1839° / 25°

0.05

39 °

Groton, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high39°

Average low25°

Average precipitation0.05 in

Chance of precipitation22%

Record high58° (2001)

Record low4° (2014)

Thu, 1939° / 25°

0.06

39 °

Groton, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high39°

Average low25°

Average precipitation0.06 in

Chance of precipitation28%

Record high59° (1989)

Record low5° (1978)

Fri, 2037° / 23°

0.04

37 °

Groton, Friday, 20 November

Climate normal for this date — 60-year average.

Average high37°

Average low23°

Average precipitation0.04 in

Chance of precipitation17%

Record high60° (1962)

Record low1° (2014)

Sat, 2137° / 22°

0.02

37 °

Groton, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high37°

Average low22°

Average precipitation0.02 in

Chance of precipitation10%

Record high59° (2012)

Record low-4° (1985)

Sun, 2237° / 22°

0.02

37 °

Groton, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high37°

Average low22°

Average precipitation0.02 in

Chance of precipitation23%

Record high56° (2006)

Record low-2° (1977)

Mon, 2335° / 22°

0.03

35 °

Groton, Monday, 23 November

Climate normal for this date — 60-year average.

Average high35°

Average low22°

Average precipitation0.03 in

Chance of precipitation18%

Record high54° (2025)

Record low-6° (1985)

Tue, 2436° / 21°

0.03

36 °

Groton, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high36°

Average low21°

Average precipitation0.03 in

Chance of precipitation12%

Record high58° (1990)

Record low-13° (1985)

Wed, 2534° / 22°

0.04

34 °

Groton, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high34°

Average low22°

Average precipitation0.04 in

Chance of precipitation18%

Record high56° (1960)

Record low-8° (1977)

Thu, 2633° / 20°

0.04

33 °

Groton, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high33°

Average low20°

Average precipitation0.04 in

Chance of precipitation25%

Record high55° (1998)

Record low-11° (1996)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Groton, SD are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Groton, SD since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.