As of 18:30 MDT

Weather in Ismay, MT

57°

Ismay, Saturday, 10 October, 18:30

Overcast. Feels like 55°. High 68°, low 46°.

Pressure29.65 inHg

Wind11.1 mph N

Humidity55%

Visibility6.2 mi

Dew point41°

See detailed hourly forecast

Sun, 1150° / 36°

0.33

50 °

Ismay, Sunday, 11 October

Rain. High 50°, low 36°.

Pressure29.94 inHg

Wind11.1 mph NE

Humidity93%

Visibility3.4 mi

Dew point44°

Mon, 1245° / 35°

0.13

45 °

Ismay, Monday, 12 October

Light rain. High 45°, low 35°.

Pressure30.00 inHg

Wind8.7 mph N

Humidity85%

Visibility6.2 mi

Dew point40°

Tue, 1352° / 34°

52 °

Ismay, Tuesday, 13 October

Partly cloudy. High 52°, low 34°.

Pressure30.09 inHg

Wind1.4 mph S

Humidity59%

Visibility6.2 mi

Dew point34°

Wed, 1457° / 34°

57 °

Ismay, Wednesday, 14 October

Clear. High 57°, low 34°.

Pressure30.27 inHg

Wind2.2 mph S

Humidity54%

Visibility6.2 mi

Dew point35°

Thu, 1560° / 42°

60 °

Ismay, Thursday, 15 October

Clear. High 60°, low 42°.

Pressure30.47 inHg

Wind10 mph N

Humidity47%

Visibility—

Dew point34°

Fri, 1640° / 31°

40 °

Ismay, Friday, 16 October

Overcast. High 40°, low 31°.

Pressure30.74 inHg

Wind20.4 mph NW

Humidity44%

Visibility—

Dew point17°

Sat, 1752° / 27°

52 °

Ismay, Saturday, 17 October

Clear. High 52°, low 27°.

Pressure30.42 inHg

Wind17.5 mph SE

Humidity21%

Visibility—

Dew point6°

Sun, 1867° / 38°

67 °

Ismay, Sunday, 18 October

Overcast. High 67°, low 38°.

Pressure29.94 inHg

Wind17.2 mph SE

Humidity24%

Visibility—

Dew point19°

Mon, 1971° / 51°

71 °

Ismay, Monday, 19 October

Clear. High 71°, low 51°.

Pressure30.03 inHg

Wind15.6 mph W

Humidity23%

Visibility—

Dew point26°

Tue, 2079° / 52°

79 °

Ismay, Tuesday, 20 October

Overcast. High 79°, low 52°.

Pressure29.74 inHg

Wind22.7 mph W

Humidity20%

Visibility—

Dew point26°

Wed, 2159° / 47°

59 °

Ismay, Wednesday, 21 October

Overcast. High 59°, low 47°.

Pressure30.00 inHg

Wind21.5 mph NW

Humidity25%

Visibility—

Dew point22°

Thu, 2249° / 41°

49 °

Ismay, Thursday, 22 October

Overcast. High 49°, low 41°.

Pressure30.56 inHg

Wind19.8 mph NW

Humidity59%

Visibility—

Dew point30°

Fri, 2367° / 38°

67 °

Ismay, Friday, 23 October

Clear. High 67°, low 38°.

Pressure30.21 inHg

Wind17 mph S

Humidity27%

Visibility—

Dew point24°

Sat, 2476° / 50°

76 °

Ismay, Saturday, 24 October

Partly cloudy. High 76°, low 50°.

Pressure29.94 inHg

Wind11.4 mph S

Humidity21%

Visibility—

Dew point27°

Sun, 2575° / 55°

75 °

Ismay, Sunday, 25 October

Overcast. High 75°, low 55°.

Pressure30.00 inHg

Wind7.2 mph SW

Humidity21%

Visibility—

Dew point27°

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 Ismay, 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 Ismay, 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.