As of 21:57 MDT

Weather in Opal, SD

55°

Opal, Wednesday, 7 October, 21:57

Overcast. Feels like 53°. High 79°, low 49°.

Pressure30.06 inHg

Wind8 mph E

Humidity56%

Visibility6.2 mi

Dew point40°

See detailed hourly forecast

Thu, 0875° / 49°

75 °

Opal, Thursday, 8 October

Overcast. High 75°, low 49°.

Pressure30.00 inHg

Wind9.8 mph SE

Humidity38%

Visibility6.2 mi

Dew point41°

Fri, 0986° / 50°

86 °

Opal, Friday, 9 October

Partly cloudy. High 86°, low 50°.

Pressure29.65 inHg

Wind14.6 mph SE

Humidity46%

Visibility6.2 mi

Dew point54°

Sat, 1082° / 61°

82 °

Opal, Saturday, 10 October

Clear. High 82°, low 61°.

Pressure29.47 inHg

Wind9.6 mph W

Humidity22%

Visibility6.2 mi

Dew point39°

Sun, 1156° / 43°

0.07

56 °

Opal, Sunday, 11 October

Light rain. High 56°, low 43°.

Pressure30.00 inHg

Wind17 mph N

Humidity68%

Visibility6.2 mi

Dew point37°

Mon, 1244° / 37°

0.37

44 °

Opal, Monday, 12 October

Rain. High 44°, low 37°.

Pressure30.15 inHg

Wind11.3 mph N

Humidity83%

Visibility—

Dew point36°

Tue, 1366° / 32°

66 °

Opal, Tuesday, 13 October

Clear. High 66°, low 32°.

Pressure30.18 inHg

Wind17.1 mph S

Humidity55%

Visibility—

Dew point32°

Wed, 1466° / 55°

66 °

Opal, Wednesday, 14 October

Overcast. High 66°, low 55°.

Pressure29.50 inHg

Wind11.7 mph SW

Humidity48%

Visibility—

Dew point42°

Thu, 1556° / 38°

0.43

56 °

Opal, Thursday, 15 October

Snow. High 56°, low 38°.

Pressure30.00 inHg

Wind22.4 mph NW

Humidity95%

Visibility—

Dew point39°

Fri, 1638° / 35°

38 °

Opal, Friday, 16 October

Overcast. High 38°, low 35°.

Pressure30.42 inHg

Wind22 mph NW

Humidity64%

Visibility—

Dew point26°

Sat, 1748° / 31°

48 °

Opal, Saturday, 17 October

Clear. High 48°, low 31°.

Pressure30.24 inHg

Wind7.4 mph S

Humidity43%

Visibility—

Dew point21°

Sun, 1864° / 39°

64 °

Opal, Sunday, 18 October

Partly cloudy. High 64°, low 39°.

Pressure30.03 inHg

Wind10.1 mph W

Humidity29%

Visibility—

Dew point24°

Mon, 1959° / 48°

59 °

Opal, Monday, 19 October

Clear. High 59°, low 48°.

Pressure30.21 inHg

Wind18.6 mph NW

Humidity41%

Visibility—

Dew point32°

Tue, 2057° / 39°

57 °

Opal, Tuesday, 20 October

Clear. High 57°, low 39°.

Pressure30.30 inHg

Wind16.4 mph S

Humidity43%

Visibility—

Dew point28°

Wed, 2168° / 44°

68 °

Opal, Wednesday, 21 October

Overcast. High 68°, low 44°.

Pressure29.65 inHg

Wind20.8 mph NW

Humidity29%

Visibility—

Dew point28°

Thu, 2253° / 44°

0.02

53 °

Opal, Thursday, 22 October

Light rain. High 53°, low 44°.

Pressure29.56 inHg

Wind27.4 mph NW

Humidity32%

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.