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As of 05:31 MDT

Weather in Opal, SD

48°Current weather

Opal, Thursday, 8 October, 05:31

Clear. Feels like 45°. High 75°, low 48°.

Pressure30.06 inHg
Wind5.6 mph E
Humidity61%
Visibility6.2 mi
Dew point35°
Fri, 0987° / 48°0Partly cloudy
87 °Partly cloudy

Opal, Friday, 9 October

Partly cloudy. High 87°, low 48°.

Pressure29.68 inHg
Wind15.4 mph SE
Humidity45%
Visibility6.2 mi
Dew point52°
Sat, 1083° / 60°0Clear
83 °Clear

Opal, Saturday, 10 October

Clear. High 83°, low 60°.

Pressure29.47 inHg
Wind10.1 mph W
Humidity20%
Visibility6.2 mi
Dew point36°
Sun, 1159° / 48°0Light rain
59 °Light rain

Opal, Sunday, 11 October

Light rain. High 59°, low 48°.

Pressure29.83 inHg
Wind13.9 mph N
Humidity74%
Visibility6.2 mi
Dew point46°
Mon, 1251° / 44°0.02Light rain
51 °Light rain

Opal, Monday, 12 October

Light rain. High 51°, low 44°.

Pressure29.97 inHg
Wind14.1 mph NW
Humidity73%
Visibility—
Dew point39°
Tue, 1355° / 39°0Overcast
55 °Overcast

Opal, Tuesday, 13 October

Overcast. High 55°, low 39°.

Pressure30.18 inHg
Wind17.9 mph S
Humidity62%
Visibility—
Dew point33°
Wed, 1473° / 57°0.09Light rain
73 °Light rain

Opal, Wednesday, 14 October

Light rain. High 73°, low 57°.

Pressure29.35 inHg
Wind17.7 mph SE
Humidity82%
Visibility—
Dew point57°
Thu, 1565° / 39°0.28Rain
65 °Rain

Opal, Thursday, 15 October

Rain. High 65°, low 39°.

Pressure29.62 inHg
Wind38.7 mph W
Humidity62%
Visibility—
Dew point33°
Fri, 1643° / 39°0.03Light rain
43 °Light rain

Opal, Friday, 16 October

Light rain. High 43°, low 39°.

Pressure30.42 inHg
Wind28.5 mph NW
Humidity63%
Visibility—
Dew point31°
Sat, 1758° / 38°0Overcast
58 °Overcast

Opal, Saturday, 17 October

Overcast. High 58°, low 38°.

Pressure30.18 inHg
Wind17.9 mph S
Humidity49%
Visibility—
Dew point31°
Sun, 1858° / 40°0Clear
58 °Clear

Opal, Sunday, 18 October

Clear. High 58°, low 40°.

Pressure30.21 inHg
Wind11.1 mph NW
Humidity44%
Visibility—
Dew point31°
Mon, 1965° / 44°0Clear
65 °Clear

Opal, Monday, 19 October

Clear. High 65°, low 44°.

Pressure30.06 inHg
Wind7.6 mph SE
Humidity34%
Visibility—
Dew point29°
Tue, 2066° / 48°0Partly cloudy
66 °Partly cloudy

Opal, Tuesday, 20 October

Partly cloudy. High 66°, low 48°.

Pressure30.09 inHg
Wind10.4 mph SE
Humidity34%
Visibility—
Dew point31°
Wed, 2176° / 51°0Overcast
76 °Overcast

Opal, Wednesday, 21 October

Overcast. High 76°, low 51°.

Pressure29.50 inHg
Wind23.3 mph SW
Humidity23%
Visibility—
Dew point27°
Thu, 2259° / 47°0Mostly clear
59 °Mostly clear

Opal, Thursday, 22 October

Mostly clear. High 59°, low 47°.

Pressure29.50 inHg
Wind25.4 mph W
Humidity28%
Visibility—
Dew point21°
Fri, 2356° / 43°0Clear
56 °Clear

Opal, Friday, 23 October

Clear. High 56°, low 43°.

Pressure29.68 inHg
Wind14 mph N
Humidity35%
Visibility—
Dew point24°

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 Opal, 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 Opal, 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.