As of 13:55 MDT

Weather in Merritt, SD

41°

Merritt, Tuesday, 13 October, 13:55

Overcast. Feels like 41°. High 41°, low 34°.

Pressure30.03 inHg

Wind2.6 mph E

Humidity87%

Visibility0.7 mi

Dew point37°

See detailed hourly forecast

Monthly outlook for Merritt, SD: average high 51.3°, average low 35.4°. That is 2.8° below the climate normal for October. Precipitation is expected on 5 days (about 0.6 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 17 October (73.1°), the coolest 16 October (25.6°).

51.3°/35.4°

Average high / low

−2.8°

Below normal

5 / 3

Wet days / normal

0.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
13 October – 22 October	54°	57.3°	-1.8°
23 October – 1 November	46.8°	52.7°	-3.3°
2 November – 11 November	at normal	47.6°	—

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).

Wed, 1441° / 35°

0.19

41 °

Merritt, Wednesday, 14 October

Light rain. High 41°, low 35°.

Pressure30.18 inHg

Wind6.5 mph S

Humidity96%

Visibility6.2 mi

Dew point41°

Thu, 1547° / 31°

0.07

47 °

Merritt, Thursday, 15 October

Light rain. High 47°, low 31°.

Pressure30.45 inHg

Wind19.7 mph NW

Humidity50%

Visibility6.2 mi

Dew point20°

Fri, 1661° / 26°

61 °

Merritt, Friday, 16 October

Clear. High 61°, low 26°.

Pressure30.53 inHg

Wind4.4 mph S

Humidity29%

Visibility6.2 mi

Dew point2°

Sat, 1773° / 46°

73 °

Merritt, Saturday, 17 October

Mostly clear. High 73°, low 46°.

Pressure29.94 inHg

Wind4 mph W

Humidity19%

Visibility6.2 mi

Dew point18°

Sun, 1860° / 42°

60 °

Merritt, Sunday, 18 October

Partly cloudy. High 60°, low 42°.

Pressure30.00 inHg

Wind8.1 mph NW

Humidity35%

Visibility—

Dew point30°

Mon, 1965° / 38°

65 °

Merritt, Monday, 19 October

Clear. High 65°, low 38°.

Pressure29.85 inHg

Wind14 mph S

Humidity26%

Visibility—

Dew point25°

Tue, 2068° / 50°

68 °

Merritt, Tuesday, 20 October

Overcast. High 68°, low 50°.

Pressure29.68 inHg

Wind12.9 mph SW

Humidity30%

Visibility—

Dew point33°

Wed, 2146° / 36°

46 °

Merritt, Wednesday, 21 October

Overcast. High 46°, low 36°.

Pressure29.88 inHg

Wind10.7 mph N

Humidity58%

Visibility—

Dew point31°

Thu, 2238° / 34°

0.13

38 °

Merritt, Thursday, 22 October

Snow. High 38°, low 34°.

Pressure29.85 inHg

Wind4.9 mph NW

Humidity97%

Visibility—

Dew point37°

Fri, 2335° / 31°

0.04

35 °

Merritt, Friday, 23 October

Light snow. High 35°, low 31°.

Pressure30.06 inHg

Wind17.1 mph NW

Humidity82%

Visibility—

Dew point30°

Sat, 2444° / 31°

44 °

Merritt, Saturday, 24 October

Overcast. High 44°, low 31°.

Pressure30.36 inHg

Wind15.5 mph NW

Humidity39%

Visibility—

Dew point19°

Sun, 2547° / 34°

47 °

Merritt, Sunday, 25 October

Clear. High 47°, low 34°.

Pressure30.33 inHg

Wind13.8 mph NW

Humidity52%

Visibility—

Dew point29°

Mon, 2652° / 29°

52 °

Merritt, Monday, 26 October

Clear. High 52°, low 29°.

Pressure30.12 inHg

Wind12.5 mph S

Humidity38%

Visibility—

Dew point25°

Tue, 2761° / 39°

61 °

Merritt, Tuesday, 27 October

Clear. High 61°, low 39°.

Pressure29.62 inHg

Wind10.7 mph NW

Humidity27%

Visibility—

Dew point23°

Wed, 2841° / 30°

0.01

41 °

Merritt, Wednesday, 28 October

Snow. High 41°, low 30°.

Pressure30.12 inHg

Wind21.5 mph NW

Humidity79%

Visibility—

Dew point28°

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

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)

Wed, 1143° / 26°

0.02

43 °

Merritt, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high43°

Average low26°

Average precipitation0.02 in

Chance of precipitation17%

Record high68° (2005)

Record low-4° (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.