As of 17:41 MDT

Weather in Hartley, SD

59°

Hartley, Monday, 19 October, 17:41

Clear. Feels like 57°. High 64°, low 40°.

Pressure30.12 inHg

Wind8.1 mph SE

Humidity49%

Visibility6.2 mi

Dew point40°

See detailed hourly forecast

Monthly outlook for Hartley, SD: average high 63.4°, average low 42.6°. That is 3.4° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 23 October (81.3°), the coolest 28 October (24.8°).

63.4°/42.6°

Average high / low

+3.4°

Above normal

0 / 3

Wet days / normal

0.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
19 October – 28 October	62.7°	59.6°	+1.7°
29 October – 7 November	64.5°	53°	+6.4°
8 November – 17 November	at normal	47°	—

October records over 66 years

96.1°4 October 1963All-time high

-5.3°26 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Bridger (11 mi).

Tue, 2074° / 41°

74 °

Hartley, Tuesday, 20 October

Clear. High 74°, low 41°.

Pressure30.00 inHg

Wind7.2 mph S

Humidity43%

Visibility6.2 mi

Dew point44°

Wed, 2167° / 44°

67 °

Hartley, Wednesday, 21 October

Partly cloudy. High 67°, low 44°.

Pressure30.21 inHg

Wind3.6 mph NE

Humidity63%

Visibility6.2 mi

Dew point49°

Thu, 2277° / 52°

77 °

Hartley, Thursday, 22 October

Overcast. High 77°, low 52°.

Pressure29.97 inHg

Wind10.8 mph SE

Humidity66%

Visibility6.2 mi

Dew point56°

Fri, 2381° / 61°

81 °

Hartley, Friday, 23 October

Partly cloudy. High 81°, low 61°.

Pressure29.62 inHg

Wind14.6 mph S

Humidity47%

Visibility6.2 mi

Dew point54°

Sat, 2464° / 49°

64 °

Hartley, Saturday, 24 October

Clear. High 64°, low 49°.

Pressure30.15 inHg

Wind15.4 mph NW

Humidity40%

Visibility—

Dew point32°

Sun, 2556° / 42°

56 °

Hartley, Sunday, 25 October

Mostly clear. High 56°, low 42°.

Pressure30.36 inHg

Wind13 mph NW

Humidity30%

Visibility—

Dew point22°

Mon, 2658° / 35°

58 °

Hartley, Monday, 26 October

Clear. High 58°, low 35°.

Pressure30.27 inHg

Wind15.8 mph NE

Humidity29%

Visibility—

Dew point18°

Tue, 2739° / 30°

39 °

Hartley, Tuesday, 27 October

Overcast. High 39°, low 30°.

Pressure30.77 inHg

Wind16.8 mph NE

Humidity40%

Visibility—

Dew point13°

Wed, 2847° / 25°

47 °

Hartley, Wednesday, 28 October

Clear. High 47°, low 25°.

Pressure30.56 inHg

Wind13 mph SE

Humidity28%

Visibility—

Dew point9°

Thu, 2964° / 36°

64 °

Hartley, Thursday, 29 October

Partly cloudy. High 64°, low 36°.

Pressure29.97 inHg

Wind17 mph S

Humidity47%

Visibility—

Dew point33°

Fri, 3065° / 41°

65 °

Hartley, Friday, 30 October

Overcast. High 65°, low 41°.

Pressure29.91 inHg

Wind8.1 mph S

Humidity28%

Visibility—

Dew point23°

Sat, 3169° / 52°

69 °

Hartley, Saturday, 31 October

Overcast. High 69°, low 52°.

Pressure29.88 inHg

Wind10.4 mph N

Humidity21%

Visibility—

Dew point23°

Sun, 0155° / 44°

55 °

Hartley, Sunday, 1 November

Overcast. High 55°, low 44°.

Pressure30.21 inHg

Wind9 mph E

Humidity40%

Visibility—

Dew point28°

Mon, 0265° / 40°

65 °

Hartley, Monday, 2 November

Overcast. High 65°, low 40°.

Pressure30.03 inHg

Wind19.7 mph SE

Humidity38%

Visibility—

Dew point30°

Tue, 0369° / 51°

0.01

69 °

Hartley, Tuesday, 3 November

Light rain. High 69°, low 51°.

Pressure29.41 inHg

Wind20.5 mph W

Humidity41%

Visibility—

Dew point42°

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

Wed, 0454° / 33°

0.01

54 °

Hartley, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high54°

Average low33°

Average precipitation0.01 in

Chance of precipitation12%

Record high81° (1978)

Record low4° (1991)

Thu, 0553° / 33°

0.03

53 °

Hartley, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°

Average low33°

Average precipitation0.03 in

Chance of precipitation17%

Record high74° (1975)

Record low7° (2003)

Fri, 0652° / 32°

0.03

52 °

Hartley, Friday, 6 November

Climate normal for this date — 60-year average.

Average high52°

Average low32°

Average precipitation0.03 in

Chance of precipitation12%

Record high76° (2020)

Record low4° (2003)

Sat, 0752° / 32°

0.03

52 °

Hartley, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high52°

Average low32°

Average precipitation0.03 in

Chance of precipitation10%

Record high74° (1999)

Record low-2° (1991)

Sun, 0850° / 32°

0.06

50 °

Hartley, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high50°

Average low32°

Average precipitation0.06 in

Chance of precipitation17%

Record high80° (1999)

Record low11° (1991)

Mon, 0947° / 30°

0.04

47 °

Hartley, Monday, 9 November

Climate normal for this date — 60-year average.

Average high47°

Average low30°

Average precipitation0.04 in

Chance of precipitation22%

Record high70° (2016)

Record low0° (1966)

Tue, 1047° / 28°

0.04

47 °

Hartley, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high47°

Average low28°

Average precipitation0.04 in

Chance of precipitation20%

Record high71° (1989)

Record low-5° (1986)

Wed, 1145° / 27°

0.01

45 °

Hartley, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high45°

Average low27°

Average precipitation0.01 in

Chance of precipitation12%

Record high70° (2005)

Record low-13° (1986)

Thu, 1247° / 28°

0.02

47 °

Hartley, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high47°

Average low28°

Average precipitation0.02 in

Chance of precipitation12%

Record high72° (1999)

Record low-9° (1986)

Fri, 1348° / 29°

0.03

48 °

Hartley, Friday, 13 November

Climate normal for this date — 60-year average.

Average high48°

Average low29°

Average precipitation0.03 in

Chance of precipitation17%

Record high73° (1990)

Record low-20° (1986)

Sat, 1447° / 30°

0.02

47 °

Hartley, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high47°

Average low30°

Average precipitation0.02 in

Chance of precipitation10%

Record high72° (1990)

Record low0° (2014)

Sun, 1546° / 28°

0.02

46 °

Hartley, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high46°

Average low28°

Average precipitation0.02 in

Chance of precipitation10%

Record high67° (2001)

Record low3° (1978)

Mon, 1648° / 29°

0.02

48 °

Hartley, Monday, 16 November

Climate normal for this date — 60-year average.

Average high48°

Average low29°

Average precipitation0.02 in

Chance of precipitation7%

Record high71° (2001)

Record low6° (2014)

Tue, 1746° / 29°

0.02

46 °

Hartley, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high46°

Average low29°

Average precipitation0.02 in

Chance of precipitation17%

Record high69° (2001)

Record low1° (2000)

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 Hartley, 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 Hartley, 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.