Monthly outlook for Lyman, SD: average high 62.2°, average low 47.7°. That is 2.2° above the climate normal for October. Precipitation is expected on 5 days (about 0.5 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 22 October (77.5°), the coolest 17 October (41.2°).
62.2°/47.7°
Average high / low
+2.2°
Above normal
5 / 3
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
64.4°
59.6°
+2.7°
25 October – 3 November
58.4°
54.3°
+2.3°
4 November – 13 November
at normal
48.6°
—
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).
Fri, 1652° / 41°0
52 °
Lyman, Friday, 16 October
Clear. High 52°, low 41°.
Pressure30.74 inHg
Wind9.7 mph NW
Humidity57%
Visibility6.2 mi
Dew point31°
Sat, 1770° / 41°0
70 °
Lyman, Saturday, 17 October
Clear. High 70°, low 41°.
Pressure30.18 inHg
Wind14.6 mph S
Humidity37%
Visibility6.2 mi
Dew point32°
Sun, 1866° / 46°0
66 °
Lyman, Sunday, 18 October
Clear. High 66°, low 46°.
Pressure30.03 inHg
Wind3.8 mph N
Humidity49%
Visibility6.2 mi
Dew point41°
Mon, 1963° / 45°0
63 °
Lyman, Monday, 19 October
Clear. High 63°, low 45°.
Pressure30.09 inHg
Wind5.8 mph NE
Humidity68%
Visibility6.2 mi
Dew point45°
Tue, 2067° / 47°0
67 °
Lyman, Tuesday, 20 October
Clear. High 67°, low 47°.
Pressure30.06 inHg
Wind12.4 mph SE
Humidity64%
Visibility—
Dew point49°
Wed, 2169° / 54°0
69 °
Lyman, Wednesday, 21 October
Light rain. High 69°, low 54°.
Pressure29.94 inHg
Wind15.3 mph S
Humidity72%
Visibility—
Dew point55°
Thu, 2278° / 60°0.03
78 °
Lyman, Thursday, 22 October
Light rain. High 78°, low 60°.
Pressure29.80 inHg
Wind14.8 mph SE
Humidity58%
Visibility—
Dew point57°
Fri, 2367° / 61°0.11
67 °
Lyman, Friday, 23 October
Light rain. High 67°, low 61°.
Pressure29.59 inHg
Wind20 mph SE
Humidity83%
Visibility—
Dew point59°
Sat, 2459° / 48°0.09
59 °
Lyman, Saturday, 24 October
Light rain. High 59°, low 48°.
Pressure30.03 inHg
Wind29.3 mph W
Humidity42%
Visibility—
Dew point34°
Sun, 2554° / 43°0
54 °
Lyman, Sunday, 25 October
Overcast. High 54°, low 43°.
Pressure30.50 inHg
Wind7.1 mph W
Humidity30%
Visibility—
Dew point20°
Mon, 2656° / 48°0.05
56 °
Lyman, Monday, 26 October
Light rain. High 56°, low 48°.
Pressure30.21 inHg
Wind15.2 mph SE
Humidity76%
Visibility—
Dew point46°
Tue, 2764° / 51°0
64 °
Lyman, Tuesday, 27 October
Clear. High 64°, low 51°.
Pressure30.00 inHg
Wind13.8 mph S
Humidity45%
Visibility—
Dew point40°
Wed, 2872° / 49°0
72 °
Lyman, Wednesday, 28 October
Overcast. High 72°, low 49°.
Pressure29.88 inHg
Wind17.5 mph SW
Humidity46%
Visibility—
Dew point45°
Thu, 2959° / 44°0
59 °
Lyman, Thursday, 29 October
Clear. High 59°, low 44°.
Pressure29.83 inHg
Wind11 mph W
Humidity42%
Visibility—
Dew point33°
Fri, 3047° / 41°0.07
47 °
Lyman, Friday, 30 October
Light rain. High 47°, low 41°.
Pressure30.00 inHg
Wind17.7 mph N
Humidity89%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3153° / 35°0.04
53 °
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°0.03
51 °
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°0.02
52 °
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°0.03
51 °
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°0.01
52 °
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°0.03
52 °
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°0.03
51 °
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°0.03
51 °
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°0.07
50 °
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°0.05
47 °
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°0.04
46 °
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°0.02
44 °
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°0.05
46 °
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°0.03
48 °
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)
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.