As of 13:56 MDT

Weather in Merritt, SD

48°

Merritt, Monday, 12 October, 13:56

Overcast. Feels like 44°. High 48°, low 35°.

Pressure29.85 inHg

Wind8.3 mph NW

Humidity73%

Visibility6.2 mi

Dew point39°

See detailed hourly forecast

Monthly outlook for Merritt, SD: average high 55.7°, average low 38.4°. That is 0.5° below the climate normal for October. Precipitation is expected on 5 days (about 1.9 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 21 October (73.7°), the coolest 16 October (23.1°).

55.7°/38.4°

Average high / low

−0.5°

Below normal

5 / 3

Wet days / normal

1.9 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
12 October – 21 October	58.5°	57.6°	+0.5°
22 October – 31 October	51°	53.3°	-1.3°
1 November – 10 November	at normal	48.3°	—

October records over 66 years

89.2°3 October 2025All-time high

-6.2°26 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Blackhawk (12 mi).

Tue, 1341° / 29°

0.11

41 °

Merritt, Tuesday, 13 October

Rain. High 41°, low 29°.

Pressure30.03 inHg

Wind2.9 mph E

Humidity96%

Visibility0.9 mi

Dew point42°

Wed, 1454° / 38°

0.23

54 °

Merritt, Wednesday, 14 October

Rain. High 54°, low 38°.

Pressure30.18 inHg

Wind5.3 mph S

Humidity76%

Visibility6.2 mi

Dew point40°

Thu, 1547° / 35°

47 °

Merritt, Thursday, 15 October

Light rain. High 47°, low 35°.

Pressure30.47 inHg

Wind16.5 mph N

Humidity50%

Visibility6.2 mi

Dew point18°

Fri, 1661° / 23°

61 °

Merritt, Friday, 16 October

Clear. High 61°, low 23°.

Pressure30.50 inHg

Wind5.8 mph S

Humidity25%

Visibility6.2 mi

Dew point2°

Sat, 1768° / 47°

68 °

Merritt, Saturday, 17 October

Clear. High 68°, low 47°.

Pressure29.94 inHg

Wind15.2 mph W

Humidity26%

Visibility—

Dew point28°

Sun, 1865° / 47°

65 °

Merritt, Sunday, 18 October

Clear. High 65°, low 47°.

Pressure29.83 inHg

Wind10 mph NE

Humidity20%

Visibility—

Dew point21°

Mon, 1961° / 42°

61 °

Merritt, Monday, 19 October

Clear. High 61°, low 42°.

Pressure30.03 inHg

Wind12.9 mph S

Humidity33%

Visibility—

Dew point29°

Tue, 2068° / 48°

68 °

Merritt, Tuesday, 20 October

Clear. High 68°, low 48°.

Pressure29.74 inHg

Wind14 mph SW

Humidity25%

Visibility—

Dew point28°

Wed, 2174° / 47°

0.09

74 °

Merritt, Wednesday, 21 October

Light rain. High 74°, low 47°.

Pressure29.65 inHg

Wind9.5 mph NE

Humidity17%

Visibility—

Dew point24°

Thu, 2252° / 43°

0.02

52 °

Merritt, Thursday, 22 October

Light rain. High 52°, low 43°.

Pressure30.06 inHg

Wind8.3 mph NE

Humidity65%

Visibility—

Dew point39°

Fri, 2351° / 41°

0.53

51 °

Merritt, Friday, 23 October

Rain. High 51°, low 41°.

Pressure29.85 inHg

Wind19 mph W

Humidity98%

Visibility—

Dew point47°

Sat, 2442° / 33°

0.93

42 °

Merritt, Saturday, 24 October

Rain. High 42°, low 33°.

Pressure29.74 inHg

Wind31.3 mph NW

Humidity95%

Visibility—

Dew point33°

Sun, 2545° / 31°

45 °

Merritt, Sunday, 25 October

Clear. High 45°, low 31°.

Pressure30.50 inHg

Wind18.5 mph NW

Humidity78%

Visibility—

Dew point35°

Mon, 2658° / 33°

58 °

Merritt, Monday, 26 October

Clear. High 58°, low 33°.

Pressure30.30 inHg

Wind8.7 mph W

Humidity56%

Visibility—

Dew point38°

Tue, 2759° / 41°

59 °

Merritt, Tuesday, 27 October

Clear. High 59°, low 41°.

Pressure30.27 inHg

Wind8.6 mph W

Humidity46%

Visibility—

Dew point35°

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

Wed, 2853° / 34°

0.07

53 °

Merritt, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high53°

Average low34°

Average precipitation0.07 in

Chance of precipitation22%

Record high75° (2016)

Record low9° (1991)

Thu, 2951° / 33°

0.09

51 °

Merritt, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high51°

Average low33°

Average precipitation0.09 in

Chance of precipitation33%

Record high74° (1968)

Record low2° (1991)

Fri, 3050° / 33°

0.04

50 °

Merritt, Friday, 30 October

Climate normal for this date — 60-year average.

Average high50°

Average low33°

Average precipitation0.04 in

Chance of precipitation17%

Record high75° (1968)

Record low-3° (1991)

Sat, 3150° / 32°

0.04

50 °

Merritt, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high50°

Average low32°

Average precipitation0.04 in

Chance of precipitation15%

Record high73° (1990)

Record low1° (2002)

Sun, 0149° / 32°

0.06

49 °

Merritt, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high49°

Average low32°

Average precipitation0.06 in

Chance of precipitation17%

Record high72° (2022)

Record low-2° (2002)

Mon, 0249° / 31°

0.04

49 °

Merritt, Monday, 2 November

Climate normal for this date — 60-year average.

Average high49°

Average low31°

Average precipitation0.04 in

Chance of precipitation18%

Record high73° (2008)

Record low-3° (1991)

Tue, 0349° / 32°

0.04

49 °

Merritt, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high49°

Average low32°

Average precipitation0.04 in

Chance of precipitation20%

Record high74° (2020)

Record low2° (1991)

Wed, 0451° / 31°

0.01

51 °

Merritt, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high51°

Average low31°

Average precipitation0.01 in

Chance of precipitation8%

Record high73° (1978)

Record low8° (1995)

Thu, 0550° / 31°

0.03

50 °

Merritt, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high50°

Average low31°

Average precipitation0.03 in

Chance of precipitation17%

Record high77° (2020)

Record low2° (2003)

Fri, 0649° / 30°

0.05

49 °

Merritt, Friday, 6 November

Climate normal for this date — 60-year average.

Average high49°

Average low30°

Average precipitation0.05 in

Chance of precipitation13%

Record high74° (2020)

Record low1° (2003)

Sat, 0749° / 30°

0.04

49 °

Merritt, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high49°

Average low30°

Average precipitation0.04 in

Chance of precipitation13%

Record high76° (2020)

Record low5° (1991)

Sun, 0847° / 29°

0.07

47 °

Merritt, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high47°

Average low29°

Average precipitation0.07 in

Chance of precipitation18%

Record high76° (1999)

Record low3° (2003)

Mon, 0944° / 28°

0.07

44 °

Merritt, Monday, 9 November

Climate normal for this date — 60-year average.

Average high44°

Average low28°

Average precipitation0.07 in

Chance of precipitation23%

Record high69° (2001)

Record low0° (1966)

Tue, 1045° / 26°

0.04

45 °

Merritt, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high45°

Average low26°

Average precipitation0.04 in

Chance of precipitation18%

Record high67° (2005)

Record low-5° (1986)

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 Merritt, 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 Merritt, 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.