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As of 02:30 MDT

Weather in Lake McDonald, MT

56°Current weather

Lake McDonald, Sunday, 9 August, 02:30

Clear. Feels like 54°. High 79°, low 50°.

Pressure29.97 inHg
Wind2.2 mph E
Humidity59%
Visibility6.2 mi
Dew point42°
Mon, 1080° / 47°0Clear
80 °Clear

Lake McDonald, Monday, 10 August

Clear. High 80°, low 47°.

Pressure29.88 inHg
Wind5.3 mph SW
Humidity24%
Visibility6.2 mi
Dew point35°
Tue, 1182° / 53°0Mostly clear
82 °Mostly clear

Lake McDonald, Tuesday, 11 August

Mostly clear. High 82°, low 53°.

Pressure29.97 inHg
Wind5.8 mph SW
Humidity27%
Visibility6.2 mi
Dew point38°
Wed, 1283° / 53°0.03Light rain
83 °Light rain

Lake McDonald, Wednesday, 12 August

Light rain. High 83°, low 53°.

Pressure29.91 inHg
Wind2.1 mph NE
Humidity37%
Visibility6.2 mi
Dew point48°
Thu, 1381° / 53°0.05Light rain
81 °Light rain

Lake McDonald, Thursday, 13 August

Light rain. High 81°, low 53°.

Pressure29.83 inHg
Wind10 mph NE
Humidity45%
Visibility—
Dew point49°
Fri, 1476° / 53°0Overcast
76 °Overcast

Lake McDonald, Friday, 14 August

Overcast. High 76°, low 53°.

Pressure29.97 inHg
Wind8.8 mph NE
Humidity48%
Visibility—
Dew point47°
Sat, 1581° / 50°0.01Light rain
81 °Light rain

Lake McDonald, Saturday, 15 August

Light rain. High 81°, low 50°.

Pressure30.03 inHg
Wind6.2 mph NE
Humidity45%
Visibility—
Dew point48°
Sun, 1671° / 56°0.01Light rain
71 °Light rain

Lake McDonald, Sunday, 16 August

Light rain. High 71°, low 56°.

Pressure29.97 inHg
Wind5.7 mph E
Humidity47%
Visibility—
Dew point48°
Mon, 1775° / 55°0.3Rain
75 °Rain

Lake McDonald, Monday, 17 August

Rain. High 75°, low 55°.

Pressure29.94 inHg
Wind5.7 mph W
Humidity47%
Visibility—
Dew point49°
Tue, 1867° / 49°0.06Light rain
67 °Light rain

Lake McDonald, Tuesday, 18 August

Light rain. High 67°, low 49°.

Pressure29.94 inHg
Wind18.9 mph SW
Humidity64%
Visibility—
Dew point45°
Wed, 1972° / 47°0Overcast
72 °Overcast

Lake McDonald, Wednesday, 19 August

Overcast. High 72°, low 47°.

Pressure30.00 inHg
Wind4.6 mph SW
Humidity38%
Visibility—
Dew point38°
Thu, 2077° / 51°0Overcast
77 °Overcast

Lake McDonald, Thursday, 20 August

Overcast. High 77°, low 51°.

Pressure29.94 inHg
Wind4.8 mph SW
Humidity41%
Visibility—
Dew point44°
Fri, 2169° / 55°0.2Light rain
69 °Light rain

Lake McDonald, Friday, 21 August

Light rain. High 69°, low 55°.

Pressure29.85 inHg
Wind5 mph NE
Humidity62%
Visibility—
Dew point54°
Sat, 2259° / 51°0.26Light rain
59 °Light rain

Lake McDonald, Saturday, 22 August

Light rain. High 59°, low 51°.

Pressure29.91 inHg
Wind5.2 mph NE
Humidity90%
Visibility—
Dew point53°
Sun, 2355° / 50°0.28Light rain
55 °Light rain

Lake McDonald, Sunday, 23 August

Light rain. High 55°, low 50°.

Pressure30.00 inHg
Wind5 mph SW
Humidity86%
Visibility—
Dew point50°
Mon, 2474° / 46°0Overcast
74 °Overcast

Lake McDonald, Monday, 24 August

Overcast. High 74°, low 46°.

Pressure29.88 inHg
Wind8 mph NE
Humidity40%
Visibility—
Dew point41°

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 Lake McDonald, 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 Lake McDonald, 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.