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As of 13:23 CDT

Weather in Lyman, SD

83°Current weather

Lyman, Saturday, 8 August, 13:23

Clear. Feels like 82°. High 97°, low 58°.

Pressure29.85 inHg
Wind13.6 mph S
Humidity34%
Visibility6.2 mi
Dew point52°
Sun, 0993° / 66°0Partly cloudy
93 °Partly cloudy

Lyman, Sunday, 9 August

Partly cloudy. High 93°, low 66°.

Pressure29.80 inHg
Wind13.4 mph NE
Humidity45%
Visibility6.2 mi
Dew point63°
Mon, 10103° / 68°0.11Rain
103 °Rain

Lyman, Monday, 10 August

Rain. High 103°, low 68°.

Pressure29.77 inHg
Wind13.8 mph SE
Humidity25%
Visibility6.2 mi
Dew point53°
Tue, 1192° / 65°0Clear
92 °Clear

Lyman, Tuesday, 11 August

Clear. High 92°, low 65°.

Pressure29.85 inHg
Wind10.9 mph NE
Humidity45%
Visibility6.2 mi
Dew point61°
Wed, 1296° / 68°0.42Rain
96 °Rain

Lyman, Wednesday, 12 August

Rain. High 96°, low 68°.

Pressure29.85 inHg
Wind5.2 mph SE
Humidity40%
Visibility6.2 mi
Dew point60°
Thu, 1377° / 58°0Mostly clear
77 °Mostly clear

Lyman, Thursday, 13 August

Mostly clear. High 77°, low 58°.

Pressure30.15 inHg
Wind10.9 mph NE
Humidity31%
Visibility—
Dew point38°
Fri, 1486° / 60°0Clear
86 °Clear

Lyman, Friday, 14 August

Clear. High 86°, low 60°.

Pressure30.00 inHg
Wind18.4 mph S
Humidity27%
Visibility—
Dew point43°
Sat, 1588° / 70°0.36Rain
88 °Rain

Lyman, Saturday, 15 August

Rain. High 88°, low 70°.

Pressure29.94 inHg
Wind11.3 mph SE
Humidity53%
Visibility—
Dew point62°
Sun, 1685° / 68°0.41Rain
85 °Rain

Lyman, Sunday, 16 August

Rain. High 85°, low 68°.

Pressure29.88 inHg
Wind14.2 mph NW
Humidity56%
Visibility—
Dew point64°
Mon, 1786° / 69°0Overcast
86 °Overcast

Lyman, Monday, 17 August

Overcast. High 86°, low 69°.

Pressure30.00 inHg
Wind8.7 mph N
Humidity50%
Visibility—
Dew point60°
Tue, 1892° / 68°0Mostly clear
92 °Mostly clear

Lyman, Tuesday, 18 August

Mostly clear. High 92°, low 68°.

Pressure29.85 inHg
Wind18.2 mph NE
Humidity37%
Visibility—
Dew point57°
Wed, 1977° / 65°0.02Light rain
77 °Light rain

Lyman, Wednesday, 19 August

Light rain. High 77°, low 65°.

Pressure30.21 inHg
Wind10.2 mph NE
Humidity40%
Visibility—
Dew point49°
Thu, 2084° / 56°0Clear
84 °Clear

Lyman, Thursday, 20 August

Clear. High 84°, low 56°.

Pressure30.21 inHg
Wind11.2 mph S
Humidity24%
Visibility—
Dew point37°
Fri, 2191° / 65°0Clear
91 °Clear

Lyman, Friday, 21 August

Clear. High 91°, low 65°.

Pressure29.94 inHg
Wind17.4 mph S
Humidity32%
Visibility—
Dew point51°
Sat, 2291° / 69°0Overcast
91 °Overcast

Lyman, Saturday, 22 August

Overcast. High 91°, low 69°.

Pressure29.88 inHg
Wind13.9 mph S
Humidity40%
Visibility—
Dew point57°
Sun, 2395° / 66°0.1Light rain
95 °Light rain

Lyman, Sunday, 23 August

Light rain. High 95°, low 66°.

Pressure29.80 inHg
Wind11.1 mph S
Humidity44%
Visibility—
Dew point62°

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.