Weather in Lyman, SD
Lyman, Monday, 19 October, 08:02
Clear. Feels like 35°. High 65°, low 40°.
Monthly outlook for Lyman, SD: average high 62.5°, average low 44.1°. 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 22 October (74.6°), the coolest 28 October (26°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 62.7° | 58.6° | +2.3° |
| 29 October – 7 November | 62.1° | 52° | +5.6° |
| 8 November – 17 November | at normal | 46.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Kennebec (6 mi).
0Lyman, Tuesday, 20 October
Clear. High 73°, low 45°.
0Lyman, Wednesday, 21 October
Clear. High 69°, low 48°.
0Lyman, Thursday, 22 October
Clear. High 75°, low 54°.
0
Lyman, Friday, 23 October
Overcast. High 74°, low 61°.
0.01
Lyman, Saturday, 24 October
Light rain. High 65°, low 53°.
0
Lyman, Sunday, 25 October
Mostly clear. High 67°, low 46°.
0
Lyman, Monday, 26 October
Partly cloudy. High 54°, low 40°.
0Lyman, Tuesday, 27 October
Overcast. High 41°, low 33°.
0Lyman, Wednesday, 28 October
Clear. High 44°, low 26°.
0Lyman, Thursday, 29 October
Clear. High 58°, low 31°.
0Lyman, Friday, 30 October
Overcast. High 61°, low 41°.
0Lyman, Saturday, 31 October
Overcast. High 71°, low 51°.
0Lyman, Sunday, 1 November
Overcast. High 69°, low 53°.
0.03Lyman, Monday, 2 November
Light rain. High 61°, low 47°.
0Lyman, Tuesday, 3 November
Partly cloudy. High 53°, low 38°.
0.01Lyman, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.03Lyman, Thursday, 5 November
Climate normal for this date — 60-year average.
0.03Lyman, Friday, 6 November
Climate normal for this date — 60-year average.
0.03Lyman, Saturday, 7 November
Climate normal for this date — 60-year average.
0.07Lyman, Sunday, 8 November
Climate normal for this date — 60-year average.
0.05Lyman, Monday, 9 November
Climate normal for this date — 60-year average.
0.04Lyman, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.02Lyman, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.05Lyman, Thursday, 12 November
Climate normal for this date — 60-year average.
0.03Lyman, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Lyman, Saturday, 14 November
Climate normal for this date — 60-year average.
0.02Lyman, Sunday, 15 November
Climate normal for this date — 60-year average.
0.04Lyman, Monday, 16 November
Climate normal for this date — 60-year average.
0.03Lyman, Tuesday, 17 November
Climate normal for this date — 60-year average.
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.
Sun and moon today
Weather history
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