As of 06:36 MDT

Weather in Hartley, SD

45°

Hartley, Wednesday, 21 October, 06:36

Clear. Feels like 44°. High 73°, low 45°.

Pressure30.21 inHg

Wind3.6 mph N

Humidity81%

Visibility6.2 mi

Dew point40°

See detailed hourly forecast

Monthly outlook for Hartley, SD: average high 58.1°, average low 42°. That is 1.2° above the climate normal for October. Precipitation is expected on 6 days (about 1.4 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 22 October (84.3°), the coolest 29 October (30.9°).

58.1°/42°

Average high / low

+1.2°

Above normal

6 / 3

Wet days / normal

1.4 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
21 October – 30 October	59.7°	57.8°	+1.1°
31 October – 9 November	55.5°	51.8°	+2.1°
10 November – 19 November	at normal	46.4°	—

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).

Thu, 2284° / 51°

84 °

Hartley, Thursday, 22 October

Clear. High 84°, low 51°.

Pressure29.94 inHg

Wind12.1 mph S

Humidity46%

Visibility6.2 mi

Dew point53°

Fri, 2383° / 60°

83 °

Hartley, Friday, 23 October

Overcast. High 83°, low 60°.

Pressure29.68 inHg

Wind11.5 mph S

Humidity49%

Visibility6.2 mi

Dew point56°

Sat, 2466° / 46°

0.06

66 °

Hartley, Saturday, 24 October

Light rain. High 66°, low 46°.

Pressure30.27 inHg

Wind16.6 mph NW

Humidity52%

Visibility6.2 mi

Dew point35°

Sun, 2544° / 41°

0.21

44 °

Hartley, Sunday, 25 October

Light rain. High 44°, low 41°.

Pressure30.47 inHg

Wind7.7 mph NE

Humidity61%

Visibility—

Dew point32°

Mon, 2645° / 37°

0.01

45 °

Hartley, Monday, 26 October

Light rain. High 45°, low 37°.

Pressure30.47 inHg

Wind7.9 mph NE

Humidity66%

Visibility—

Dew point31°

Tue, 2750° / 32°

0.01

50 °

Hartley, Tuesday, 27 October

Light rain. High 50°, low 32°.

Pressure30.21 inHg

Wind20.2 mph SE

Humidity66%

Visibility—

Dew point32°

Wed, 2845° / 38°

0.04

45 °

Hartley, Wednesday, 28 October

Light rain. High 45°, low 38°.

Pressure30.24 inHg

Wind26.2 mph NW

Humidity73%

Visibility—

Dew point33°

Thu, 2949° / 31°

49 °

Hartley, Thursday, 29 October

Clear. High 49°, low 31°.

Pressure30.30 inHg

Wind11.1 mph NW

Humidity40%

Visibility—

Dew point20°

Fri, 3056° / 35°

56 °

Hartley, Friday, 30 October

Clear. High 56°, low 35°.

Pressure30.09 inHg

Wind18.2 mph SE

Humidity50%

Visibility—

Dew point31°

Sat, 3162° / 45°

62 °

Hartley, Saturday, 31 October

Overcast. High 62°, low 45°.

Pressure29.71 inHg

Wind17.6 mph S

Humidity64%

Visibility—

Dew point43°

Sun, 0161° / 44°

61 °

Hartley, Sunday, 1 November

Overcast. High 61°, low 44°.

Pressure29.85 inHg

Wind9.6 mph SE

Humidity62%

Visibility—

Dew point42°

Mon, 0271° / 48°

71 °

Hartley, Monday, 2 November

Overcast. High 71°, low 48°.

Pressure29.74 inHg

Wind14.2 mph S

Humidity38%

Visibility—

Dew point35°

Tue, 0355° / 50°

0.54

55 °

Hartley, Tuesday, 3 November

Rain. High 55°, low 50°.

Pressure29.47 inHg

Wind22 mph E

Humidity92%

Visibility—

Dew point50°

Wed, 0450° / 35°

0.35

50 °

Hartley, Wednesday, 4 November

Snow. High 50°, low 35°.

Pressure29.56 inHg

Wind22.9 mph NW

Humidity95%

Visibility—

Dew point47°

Thu, 0535° / 32°

0.19

35 °

Hartley, Thursday, 5 November

Light snow. High 35°, low 32°.

Pressure30.15 inHg

Wind23.2 mph NW

Humidity91%

Visibility—

Dew point31°

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

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)

Wed, 1846° / 28°

0.03

46 °

Hartley, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high46°

Average low28°

Average precipitation0.03 in

Chance of precipitation17%

Record high67° (2007)

Record low-1° (2014)

Thu, 1944° / 28°

0.03

44 °

Hartley, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high44°

Average low28°

Average precipitation0.03 in

Chance of precipitation18%

Record high70° (2003)

Record low5° (1985)

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.