As of 01:25 MDT

Weather in Merritt, SD

51°

Merritt, Tuesday, 20 October, 01:25

Clear. Feels like 48°. High 70°, low 42°.

Pressure30.06 inHg

Wind11.2 mph SW

Humidity51%

Visibility6.2 mi

Dew point34°

See detailed hourly forecast

Monthly outlook for Merritt, SD: average high 58.3°, average low 38°. That is 2.9° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 23 October (72.2°), the coolest 27 October (18.5°).

58.3°/38°

Average high / low

+2.9°

Above normal

0 / 3

Wet days / normal

0.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
20 October – 29 October	56.9°	55.1°	+1°
30 October – 8 November	60.7°	49.3°	+6.3°
9 November – 18 November	at normal	45.1°	—

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, 2162° / 39°

62 °

Merritt, Wednesday, 21 October

Overcast. High 62°, low 39°.

Pressure30.18 inHg

Wind6.6 mph SE

Humidity48%

Visibility6.2 mi

Dew point41°

Thu, 2271° / 50°

71 °

Merritt, Thursday, 22 October

Mostly clear. High 71°, low 50°.

Pressure29.94 inHg

Wind8.4 mph SW

Humidity37%

Visibility6.2 mi

Dew point43°

Fri, 2372° / 55°

72 °

Merritt, Friday, 23 October

Overcast. High 72°, low 55°.

Pressure29.65 inHg

Wind8.1 mph SW

Humidity33%

Visibility6.2 mi

Dew point42°

Sat, 2453° / 36°

53 °

Merritt, Saturday, 24 October

Clear. High 53°, low 36°.

Pressure30.21 inHg

Wind14.2 mph NW

Humidity54%

Visibility—

Dew point31°

Sun, 2540° / 30°

40 °

Merritt, Sunday, 25 October

Overcast. High 40°, low 30°.

Pressure30.45 inHg

Wind6.6 mph E

Humidity74%

Visibility—

Dew point30°

Mon, 2648° / 29°

48 °

Merritt, Monday, 26 October

Mostly clear. High 48°, low 29°.

Pressure30.21 inHg

Wind10.7 mph NE

Humidity36%

Visibility—

Dew point20°

Tue, 2739° / 19°

0.01

39 °

Merritt, Tuesday, 27 October

Light snow. High 39°, low 19°.

Pressure30.59 inHg

Wind8.4 mph E

Humidity30%

Visibility—

Dew point7°

Wed, 2855° / 23°

55 °

Merritt, Wednesday, 28 October

Clear. High 55°, low 23°.

Pressure30.15 inHg

Wind7.8 mph SW

Humidity28%

Visibility—

Dew point18°

Thu, 2959° / 33°

59 °

Merritt, Thursday, 29 October

Clear. High 59°, low 33°.

Pressure29.91 inHg

Wind6 mph SW

Humidity18%

Visibility—

Dew point12°

Fri, 3062° / 40°

62 °

Merritt, Friday, 30 October

Mostly clear. High 62°, low 40°.

Pressure29.77 inHg

Wind7.5 mph SW

Humidity14%

Visibility—

Dew point10°

Sat, 3161° / 44°

61 °

Merritt, Saturday, 31 October

Overcast. High 61°, low 44°.

Pressure29.74 inHg

Wind14.2 mph SW

Humidity39%

Visibility—

Dew point34°

Sun, 0156° / 40°

56 °

Merritt, Sunday, 1 November

Mostly clear. High 56°, low 40°.

Pressure30.03 inHg

Wind10.1 mph N

Humidity35%

Visibility—

Dew point27°

Mon, 0262° / 40°

62 °

Merritt, Monday, 2 November

Clear. High 62°, low 40°.

Pressure30.09 inHg

Wind8.6 mph W

Humidity23%

Visibility—

Dew point20°

Tue, 0363° / 42°

63 °

Merritt, Tuesday, 3 November

Overcast. High 63°, low 42°.

Pressure29.91 inHg

Wind6.3 mph W

Humidity18%

Visibility—

Dew point15°

Wed, 0460° / 47°

60 °

Merritt, Wednesday, 4 November

Overcast. High 60°, low 47°.

Pressure29.74 inHg

Wind10.4 mph NW

Humidity26%

Visibility—

Dew point23°

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

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)

Thu, 1246° / 27°

0.02

46 °

Merritt, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high46°

Average low27°

Average precipitation0.02 in

Chance of precipitation18%

Record high72° (1999)

Record low-11° (1986)

Fri, 1346° / 28°

0.04

46 °

Merritt, Friday, 13 November

Climate normal for this date — 60-year average.

Average high46°

Average low28°

Average precipitation0.04 in

Chance of precipitation20%

Record high71° (1999)

Record low-14° (1986)

Sat, 1446° / 29°

0.02

46 °

Merritt, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high46°

Average low29°

Average precipitation0.02 in

Chance of precipitation20%

Record high74° (2025)

Record low-4° (2014)

Sun, 1546° / 28°

0.02

46 °

Merritt, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high46°

Average low28°

Average precipitation0.02 in

Chance of precipitation12%

Record high69° (2021)

Record low2° (2014)

Mon, 1647° / 28°

0.02

47 °

Merritt, Monday, 16 November

Climate normal for this date — 60-year average.

Average high47°

Average low28°

Average precipitation0.02 in

Chance of precipitation7%

Record high67° (2017)

Record low1° (2000)

Tue, 1744° / 28°

0.02

44 °

Merritt, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high44°

Average low28°

Average precipitation0.02 in

Chance of precipitation17%

Record high65° (1999)

Record low0° (2000)

Wed, 1844° / 27°

0.04

44 °

Merritt, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high44°

Average low27°

Average precipitation0.04 in

Chance of precipitation17%

Record high69° (2008)

Record low7° (2014)

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.