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As of 14:11 MDT

Weather in Sidney, MT

89°Current weather

Sidney, Saturday, 8 August, 14:11

Clear. Feels like 87°. High 90°, low 54°.

Pressure29.80 inHg
Wind6.9 mph NE
Humidity30%
Visibility6.2 mi
Dew point53°
Sun, 0991° / 54°0Clear
91 °Clear

Sidney, Sunday, 9 August

Clear. High 91°, low 54°.

Pressure29.85 inHg
Wind13.9 mph E
Humidity28%
Visibility6.2 mi
Dew point46°
Mon, 1087° / 49°0Overcast
87 °Overcast

Sidney, Monday, 10 August

Overcast. High 87°, low 49°.

Pressure29.88 inHg
Wind13.4 mph NE
Humidity29%
Visibility6.2 mi
Dew point44°
Tue, 1189° / 57°0Clear
89 °Clear

Sidney, Tuesday, 11 August

Clear. High 89°, low 57°.

Pressure29.91 inHg
Wind7.2 mph E
Humidity28%
Visibility6.2 mi
Dew point46°
Wed, 1286° / 57°0Mostly clear
86 °Mostly clear

Sidney, Wednesday, 12 August

Mostly clear. High 86°, low 57°.

Pressure29.91 inHg
Wind12.8 mph NE
Humidity32%
Visibility6.2 mi
Dew point48°
Thu, 1385° / 57°0Clear
85 °Clear

Sidney, Thursday, 13 August

Clear. High 85°, low 57°.

Pressure30.06 inHg
Wind14.8 mph E
Humidity31%
Visibility—
Dew point42°
Fri, 1489° / 66°0.21Light rain
89 °Light rain

Sidney, Friday, 14 August

Light rain. High 89°, low 66°.

Pressure29.88 inHg
Wind16.8 mph E
Humidity50%
Visibility—
Dew point56°
Sat, 1580° / 62°0Overcast
80 °Overcast

Sidney, Saturday, 15 August

Overcast. High 80°, low 62°.

Pressure30.03 inHg
Wind11.6 mph N
Humidity42%
Visibility—
Dew point52°
Sun, 1689° / 65°0.03Light rain
89 °Light rain

Sidney, Sunday, 16 August

Light rain. High 89°, low 65°.

Pressure29.97 inHg
Wind13.7 mph E
Humidity35%
Visibility—
Dew point49°
Mon, 1797° / 71°0Overcast
97 °Overcast

Sidney, Monday, 17 August

Overcast. High 97°, low 71°.

Pressure29.91 inHg
Wind15.8 mph NW
Humidity21%
Visibility—
Dew point44°
Tue, 1893° / 67°0Overcast
93 °Overcast

Sidney, Tuesday, 18 August

Overcast. High 93°, low 67°.

Pressure29.97 inHg
Wind15.9 mph NE
Humidity25%
Visibility—
Dew point45°
Wed, 1978° / 65°0.14Light rain
78 °Light rain

Sidney, Wednesday, 19 August

Light rain. High 78°, low 65°.

Pressure30.06 inHg
Wind12.4 mph NE
Humidity63%
Visibility—
Dew point57°
Thu, 2088° / 65°0Partly cloudy
88 °Partly cloudy

Sidney, Thursday, 20 August

Partly cloudy. High 88°, low 65°.

Pressure29.94 inHg
Wind11.2 mph E
Humidity36%
Visibility—
Dew point52°
Fri, 2198° / 68°0Mostly clear
98 °Mostly clear

Sidney, Friday, 21 August

Mostly clear. High 98°, low 68°.

Pressure29.77 inHg
Wind20.3 mph NE
Humidity19%
Visibility—
Dew point44°
Sat, 2277° / 53°0Overcast
77 °Overcast

Sidney, Saturday, 22 August

Overcast. High 77°, low 53°.

Pressure30.15 inHg
Wind13.9 mph E
Humidity36%
Visibility—
Dew point41°
Sun, 2387° / 59°0Clear
87 °Clear

Sidney, Sunday, 23 August

Clear. High 87°, low 59°.

Pressure30.06 inHg
Wind11.2 mph NE
Humidity28%
Visibility—
Dew point42°

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 Sidney, MT 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 Sidney, MT 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.