As of 11:28 CDT

Weather in Lyman, SD

44°Current weather

Lyman, Friday, 16 October, 11:28

Mostly clear. Feels like 38°. High 51°, low 41°.

Pressure30.74 inHg
Wind11.8 mph N
Humidity62%
Visibility6.2 mi
Dew point32°

Monthly outlook for Lyman, SD: average high 56.6°, average low 42.8°. That is 0.7° below the climate normal for October. Precipitation is expected on 5 days (about 2.3 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 17 October (70.3°), the coolest 27 October (31.6°).

56.6°/42.8°
Average high / low
−0.7°
Below normal
5 / 3
Wet days / normal
2.3 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
16 October – 25 October62.7°59.6°+1.8°
26 October – 4 November46.4°53.7°-4.1°
5 November – 14 Novemberat normal48.1°—

October records over 66 years

92.8°4 October 1975All-time high
2.5°27 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Kennebec (6 mi).

Sat, 1770° / 41°0Clear
70 °Clear

Lyman, Saturday, 17 October

Clear. High 70°, low 41°.

Pressure30.18 inHg
Wind14.2 mph S
Humidity37%
Visibility6.2 mi
Dew point33°
Sun, 1867° / 46°0Clear
67 °Clear

Lyman, Sunday, 18 October

Clear. High 67°, low 46°.

Pressure30.00 inHg
Wind2.5 mph SW
Humidity47%
Visibility6.2 mi
Dew point41°
Mon, 1963° / 43°0Clear
63 °Clear

Lyman, Monday, 19 October

Clear. High 63°, low 43°.

Pressure30.12 inHg
Wind5.8 mph E
Humidity68%
Visibility6.2 mi
Dew point46°
Tue, 2067° / 50°0Clear
67 °Clear

Lyman, Tuesday, 20 October

Clear. High 67°, low 50°.

Pressure30.06 inHg
Wind14.4 mph SE
Humidity62%
Visibility—
Dew point48°
Wed, 2169° / 52°0Clear
69 °Clear

Lyman, Wednesday, 21 October

Clear. High 69°, low 52°.

Pressure30.06 inHg
Wind10.6 mph S
Humidity67%
Visibility—
Dew point52°
Thu, 2269° / 49°0Clear
69 °Clear

Lyman, Thursday, 22 October

Clear. High 69°, low 49°.

Pressure30.18 inHg
Wind10.6 mph E
Humidity32%
Visibility—
Dew point31°
Fri, 2367° / 52°0.41Rain
67 °Rain

Lyman, Friday, 23 October

Rain. High 67°, low 52°.

Pressure29.85 inHg
Wind20.5 mph S
Humidity90%
Visibility—
Dew point55°
Sat, 2458° / 47°0Clear
58 °Clear

Lyman, Saturday, 24 October

Clear. High 58°, low 47°.

Pressure30.15 inHg
Wind19.5 mph NW
Humidity52%
Visibility—
Dew point36°
Sun, 2546° / 34°0.56Snow
46 °Snow

Lyman, Sunday, 25 October

Snow. High 46°, low 34°.

Pressure30.33 inHg
Wind14.5 mph NE
Humidity71%
Visibility—
Dew point32°
Mon, 2643° / 33°0.43Snow
43 °Snow

Lyman, Monday, 26 October

Snow. High 43°, low 33°.

Pressure30.30 inHg
Wind13.7 mph N
Humidity77%
Visibility—
Dew point32°
Tue, 2744° / 32°0Partly cloudy
44 °Partly cloudy

Lyman, Tuesday, 27 October

Partly cloudy. High 44°, low 32°.

Pressure30.12 inHg
Wind14.4 mph SE
Humidity74%
Visibility—
Dew point33°
Wed, 2846° / 42°0.52Rain
46 °Rain

Lyman, Wednesday, 28 October

Rain. High 46°, low 42°.

Pressure29.77 inHg
Wind11.5 mph SE
Humidity97%
Visibility—
Dew point43°
Thu, 2949° / 44°0.02Light rain
49 °Light rain

Lyman, Thursday, 29 October

Light rain. High 49°, low 44°.

Pressure29.94 inHg
Wind11.7 mph NW
Humidity87%
Visibility—
Dew point43°
Fri, 3052° / 39°0Overcast
52 °Overcast

Lyman, Friday, 30 October

Overcast. High 52°, low 39°.

Pressure30.27 inHg
Wind9.4 mph NE
Humidity55%
Visibility—
Dew point33°
Sat, 3145° / 41°0.39Rain
45 °Rain

Lyman, Saturday, 31 October

Rain. High 45°, low 41°.

Pressure30.21 inHg
Wind16.9 mph NE
Humidity85%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0151° / 36°0.03Climate normal
51 °Climate normal

Lyman, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high51°
Average low36°
Average precipitation0.03 in
Chance of precipitation18%
Record high77° (1990)
Record low12° (2002)
Mon, 0252° / 35°0.02Climate normal
52 °Climate normal

Lyman, Monday, 2 November

Climate normal for this date — 60-year average.

Average high52°
Average low35°
Average precipitation0.02 in
Chance of precipitation15%
Record high75° (1964)
Record low8° (1991)
Tue, 0351° / 35°0.03Climate normal
51 °Climate normal

Lyman, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high51°
Average low35°
Average precipitation0.03 in
Chance of precipitation17%
Record high73° (2020)
Record low6° (1991)
Wed, 0452° / 33°0.01Climate normal
52 °Climate normal

Lyman, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high52°
Average low33°
Average precipitation0.01 in
Chance of precipitation10%
Record high76° (1978)
Record low4° (1995)
Thu, 0552° / 34°0.03Climate normal
52 °Climate normal

Lyman, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high52°
Average low34°
Average precipitation0.03 in
Chance of precipitation17%
Record high77° (2001)
Record low15° (2003)
Fri, 0651° / 33°0.03Climate normal
51 °Climate normal

Lyman, Friday, 6 November

Climate normal for this date — 60-year average.

Average high51°
Average low33°
Average precipitation0.03 in
Chance of precipitation17%
Record high78° (2020)
Record low2° (2003)
Sat, 0751° / 33°0.03Climate normal
51 °Climate normal

Lyman, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high51°
Average low33°
Average precipitation0.03 in
Chance of precipitation12%
Record high72° (2006)
Record low2° (1991)
Sun, 0850° / 33°0.07Climate normal
50 °Climate normal

Lyman, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high50°
Average low33°
Average precipitation0.07 in
Chance of precipitation15%
Record high80° (1999)
Record low9° (1991)
Mon, 0947° / 32°0.05Climate normal
47 °Climate normal

Lyman, Monday, 9 November

Climate normal for this date — 60-year average.

Average high47°
Average low32°
Average precipitation0.05 in
Chance of precipitation20%
Record high70° (2016)
Record low7° (2000)
Tue, 1046° / 28°0.04Climate normal
46 °Climate normal

Lyman, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high46°
Average low28°
Average precipitation0.04 in
Chance of precipitation23%
Record high70° (1989)
Record low-2° (1986)
Wed, 1144° / 29°0.02Climate normal
44 °Climate normal

Lyman, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high44°
Average low29°
Average precipitation0.02 in
Chance of precipitation15%
Record high69° (2005)
Record low-5° (1986)
Thu, 1246° / 28°0.05Climate normal
46 °Climate normal

Lyman, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high46°
Average low28°
Average precipitation0.05 in
Chance of precipitation13%
Record high71° (1999)
Record low-3° (1986)
Fri, 1348° / 29°0.03Climate normal
48 °Climate normal

Lyman, Friday, 13 November

Climate normal for this date — 60-year average.

Average high48°
Average low29°
Average precipitation0.03 in
Chance of precipitation17%
Record high71° (1981)
Record low-14° (1986)
Sat, 1446° / 30°0.02Climate normal
46 °Climate normal

Lyman, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high46°
Average low30°
Average precipitation0.02 in
Chance of precipitation15%
Record high74° (2025)
Record low6° (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 Lyman, 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 Lyman, 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.