As of 12:26 MDT

Weather in Greycliff, MT

68°

Greycliff, Saturday, 17 October, 12:26

Overcast. Feels like 66°. High 70°, low 42°.

Pressure30.00 inHg

Wind32.2 mph W

Humidity23%

Visibility6.2 mi

Dew point30°

See detailed hourly forecast

Sun, 1861° / 41°

61 °

Greycliff, Sunday, 18 October

Mostly clear. High 61°, low 41°.

Pressure30.12 inHg

Wind5.1 mph E

Humidity39%

Visibility6.2 mi

Dew point31°

Mon, 1966° / 35°

66 °

Greycliff, Monday, 19 October

Clear. High 66°, low 35°.

Pressure29.97 inHg

Wind1.7 mph SE

Humidity40%

Visibility6.2 mi

Dew point34°

Tue, 2067° / 42°

67 °

Greycliff, Tuesday, 20 October

Overcast. High 67°, low 42°.

Pressure30.00 inHg

Wind3.9 mph NW

Humidity40%

Visibility6.2 mi

Dew point38°

Wed, 2163° / 37°

63 °

Greycliff, Wednesday, 21 October

Clear. High 63°, low 37°.

Pressure30.09 inHg

Wind2.8 mph E

Humidity58%

Visibility6.2 mi

Dew point41°

Thu, 2268° / 40°

68 °

Greycliff, Thursday, 22 October

Clear. High 68°, low 40°.

Pressure29.88 inHg

Wind2.9 mph SE

Humidity49%

Visibility—

Dew point38°

Fri, 2351° / 41°

1.59

51 °

Greycliff, Friday, 23 October

Heavy rain. High 51°, low 41°.

Pressure29.68 inHg

Wind12.2 mph N

Humidity91%

Visibility—

Dew point48°

Sat, 2449° / 39°

0.56

49 °

Greycliff, Saturday, 24 October

Rain. High 49°, low 39°.

Pressure30.09 inHg

Wind11.5 mph W

Humidity65%

Visibility—

Dew point35°

Sun, 2552° / 40°

52 °

Greycliff, Sunday, 25 October

Overcast. High 52°, low 40°.

Pressure29.83 inHg

Wind4.6 mph E

Humidity61%

Visibility—

Dew point35°

Mon, 2652° / 39°

52 °

Greycliff, Monday, 26 October

Partly cloudy. High 52°, low 39°.

Pressure29.65 inHg

Wind21.2 mph W

Humidity37%

Visibility—

Dew point23°

Tue, 2751° / 40°

0.06

51 °

Greycliff, Tuesday, 27 October

Light rain. High 51°, low 40°.

Pressure29.62 inHg

Wind26.3 mph W

Humidity81%

Visibility—

Dew point38°

Wed, 2850° / 37°

0.02

50 °

Greycliff, Wednesday, 28 October

Snow. High 50°, low 37°.

Pressure29.91 inHg

Wind25.3 mph W

Humidity29%

Visibility—

Dew point15°

Thu, 2953° / 36°

0.01

53 °

Greycliff, Thursday, 29 October

Light rain. High 53°, low 36°.

Pressure29.59 inHg

Wind18.5 mph W

Humidity34%

Visibility—

Dew point22°

Fri, 3038° / 26°

0.37

38 °

Greycliff, Friday, 30 October

Snow. High 38°, low 26°.

Pressure29.88 inHg

Wind9.3 mph NE

Humidity94%

Visibility—

Dew point30°

Sat, 3138° / 18°

38 °

Greycliff, Saturday, 31 October

Overcast. High 38°, low 18°.

Pressure29.83 inHg

Wind6.9 mph W

Humidity75%

Visibility—

Dew point23°

Sun, 0141° / 26°

41 °

Greycliff, Sunday, 1 November

Overcast. High 41°, low 26°.

Pressure29.88 inHg

Wind5.5 mph SW

Humidity71%

Visibility—

Dew point29°

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 Greycliff, 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 Greycliff, 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.