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As of 21:07 MDT

Weather in Riverdale, MT

74°Current weather

Riverdale, Saturday, 8 August, 21:07

Overcast. Feels like 73°. High 84°, low 52°.

Pressure29.83 inHg
Wind4.2 mph NE
Humidity42%
Visibility6.2 mi
Dew point47°
Sun, 0982° / 52°0Clear
82 °Clear

Riverdale, Sunday, 9 August

Clear. High 82°, low 52°.

Pressure29.94 inHg
Wind7.1 mph N
Humidity35%
Visibility6.2 mi
Dew point46°
Mon, 1088° / 49°0Clear
88 °Clear

Riverdale, Monday, 10 August

Clear. High 88°, low 49°.

Pressure29.83 inHg
Wind7.9 mph N
Humidity25%
Visibility6.2 mi
Dew point42°
Tue, 1188° / 58°0Clear
88 °Clear

Riverdale, Tuesday, 11 August

Clear. High 88°, low 58°.

Pressure29.94 inHg
Wind6.6 mph NE
Humidity28%
Visibility6.2 mi
Dew point42°
Wed, 1288° / 59°0Mostly clear
88 °Mostly clear

Riverdale, Wednesday, 12 August

Mostly clear. High 88°, low 59°.

Pressure29.85 inHg
Wind6.9 mph N
Humidity29%
Visibility6.2 mi
Dew point44°
Thu, 1381° / 55°0Mostly clear
81 °Mostly clear

Riverdale, Thursday, 13 August

Mostly clear. High 81°, low 55°.

Pressure29.85 inHg
Wind9.8 mph N
Humidity47%
Visibility—
Dew point47°
Fri, 1474° / 58°0Overcast
74 °Overcast

Riverdale, Friday, 14 August

Overcast. High 74°, low 58°.

Pressure30.09 inHg
Wind13 mph NE
Humidity56%
Visibility—
Dew point47°
Sat, 1585° / 52°0Partly cloudy
85 °Partly cloudy

Riverdale, Saturday, 15 August

Partly cloudy. High 85°, low 52°.

Pressure30.12 inHg
Wind10.6 mph NE
Humidity46%
Visibility—
Dew point47°
Sun, 1695° / 59°0Clear
95 °Clear

Riverdale, Sunday, 16 August

Clear. High 95°, low 59°.

Pressure29.91 inHg
Wind17.3 mph W
Humidity16%
Visibility—
Dew point34°
Mon, 1797° / 62°0Partly cloudy
97 °Partly cloudy

Riverdale, Monday, 17 August

Partly cloudy. High 97°, low 62°.

Pressure29.88 inHg
Wind16.6 mph W
Humidity12%
Visibility—
Dew point28°
Tue, 1882° / 62°0.08Light rain
82 °Light rain

Riverdale, Tuesday, 18 August

Light rain. High 82°, low 62°.

Pressure30.12 inHg
Wind10.2 mph SE
Humidity80%
Visibility—
Dew point57°
Wed, 1989° / 64°0.01Light rain
89 °Light rain

Riverdale, Wednesday, 19 August

Light rain. High 89°, low 64°.

Pressure29.88 inHg
Wind24.7 mph W
Humidity25%
Visibility—
Dew point41°
Thu, 2090° / 61°0.02Light rain
90 °Light rain

Riverdale, Thursday, 20 August

Light rain. High 90°, low 61°.

Pressure29.80 inHg
Wind17.1 mph NW
Humidity23%
Visibility—
Dew point40°
Fri, 2188° / 60°0.01Light rain
88 °Light rain

Riverdale, Friday, 21 August

Light rain. High 88°, low 60°.

Pressure29.80 inHg
Wind17.7 mph NW
Humidity16%
Visibility—
Dew point29°
Sat, 2288° / 53°0Clear
88 °Clear

Riverdale, Saturday, 22 August

Clear. High 88°, low 53°.

Pressure29.88 inHg
Wind12 mph NE
Humidity34%
Visibility—
Dew point42°
Sun, 2391° / 61°0Overcast
91 °Overcast

Riverdale, Sunday, 23 August

Overcast. High 91°, low 61°.

Pressure29.71 inHg
Wind20 mph W
Humidity11%
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 Riverdale, 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 Riverdale, 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.