As of 17:41 CDT

Weather in Lyman, SD

54°Current weather

Lyman, Wednesday, 14 October, 17:41

Mostly clear. Feels like 52°. High 54°, low 40°.

Pressure30.12 inHg
Wind4.6 mph E
Humidity58%
Visibility6.2 mi
Dew point40°

Monthly outlook for Lyman, SD: average high 63.9°, average low 44.9°. That is 2.9° above the climate normal for October. Precipitation is expected on 3 days (about 1.3 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 20 October (71.7°), the coolest 25 October (38.7°).

63.9°/44.9°
Average high / low
+2.9°
Above normal
3 / 3
Wet days / normal
1.3 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
14 October – 23 October64°60°+2.2°
24 October – 2 November63.7°54.9°+4.9°
3 November – 12 Novemberat normal48.9°—

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).

Thu, 1557° / 44°0.01Light rain
57 °Light rain

Lyman, Thursday, 15 October

Light rain. High 57°, low 44°.

Pressure30.21 inHg
Wind18.5 mph NW
Humidity56%
Visibility6.2 mi
Dew point39°
Fri, 1651° / 40°0.01Light rain
51 °Light rain

Lyman, Friday, 16 October

Light rain. High 51°, low 40°.

Pressure30.74 inHg
Wind12.6 mph NW
Humidity59%
Visibility6.2 mi
Dew point28°
Sat, 1770° / 39°0Clear
70 °Clear

Lyman, Saturday, 17 October

Clear. High 70°, low 39°.

Pressure30.21 inHg
Wind16.1 mph S
Humidity35%
Visibility6.2 mi
Dew point24°
Sun, 1867° / 46°0Clear
67 °Clear

Lyman, Sunday, 18 October

Clear. High 67°, low 46°.

Pressure30.12 inHg
Wind6.5 mph N
Humidity46%
Visibility6.2 mi
Dew point38°
Mon, 1965° / 42°0Clear
65 °Clear

Lyman, Monday, 19 October

Clear. High 65°, low 42°.

Pressure30.21 inHg
Wind11.4 mph SE
Humidity57%
Visibility—
Dew point42°
Tue, 2072° / 47°0Clear
72 °Clear

Lyman, Tuesday, 20 October

Clear. High 72°, low 47°.

Pressure30.03 inHg
Wind18.3 mph S
Humidity44%
Visibility—
Dew point42°
Wed, 2169° / 56°0Overcast
69 °Overcast

Lyman, Wednesday, 21 October

Overcast. High 69°, low 56°.

Pressure29.85 inHg
Wind14.3 mph NW
Humidity40%
Visibility—
Dew point42°
Thu, 2271° / 48°0Clear
71 °Clear

Lyman, Thursday, 22 October

Clear. High 71°, low 48°.

Pressure30.00 inHg
Wind12.1 mph SE
Humidity44%
Visibility—
Dew point40°
Fri, 2364° / 48°0.72Rain
64 °Rain

Lyman, Friday, 23 October

Rain. High 64°, low 48°.

Pressure29.68 inHg
Wind28.6 mph NW
Humidity96%
Visibility—
Dew point60°
Sat, 2453° / 44°0.5Rain
53 °Rain

Lyman, Saturday, 24 October

Rain. High 53°, low 44°.

Pressure30.24 inHg
Wind21.5 mph NW
Humidity44%
Visibility—
Dew point29°
Sun, 2554° / 39°0Clear
54 °Clear

Lyman, Sunday, 25 October

Clear. High 54°, low 39°.

Pressure30.42 inHg
Wind16.8 mph NW
Humidity36%
Visibility—
Dew point24°
Mon, 2668° / 40°0Clear
68 °Clear

Lyman, Monday, 26 October

Clear. High 68°, low 40°.

Pressure30.15 inHg
Wind12.8 mph S
Humidity34%
Visibility—
Dew point30°
Tue, 2769° / 47°0Clear
69 °Clear

Lyman, Tuesday, 27 October

Clear. High 69°, low 47°.

Pressure29.85 inHg
Wind11.1 mph SW
Humidity41%
Visibility—
Dew point39°
Wed, 2870° / 48°0Overcast
70 °Overcast

Lyman, Wednesday, 28 October

Overcast. High 70°, low 48°.

Pressure29.71 inHg
Wind8.5 mph S
Humidity33%
Visibility—
Dew point35°
Thu, 2967° / 50°0Overcast
67 °Overcast

Lyman, Thursday, 29 October

Overcast. High 67°, low 50°.

Pressure29.97 inHg
Wind9.1 mph SE
Humidity45%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3053° / 37°0.06Climate normal
53 °Climate normal

Lyman, Friday, 30 October

Climate normal for this date — 60-year average.

Average high53°
Average low37°
Average precipitation0.06 in
Chance of precipitation32%
Record high77° (1968)
Record low11° (1991)
Sat, 3153° / 35°0.04Climate normal
53 °Climate normal

Lyman, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high53°
Average low35°
Average precipitation0.04 in
Chance of precipitation15%
Record high82° (2016)
Record low14° (2002)
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)

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.