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As of 12:11 MDT

Weather in Arco, ID

86°Current weather

Arco, Saturday, 8 August, 12:11

Clear. Feels like 83°. High 94°, low 58°.

Pressure29.88 inHg
Wind9.1 mph S
Humidity17%
Visibility6.2 mi
Dew point35°
Sun, 0994° / 60°0Clear
94 °Clear

Arco, Sunday, 9 August

Clear. High 94°, low 60°.

Pressure29.80 inHg
Wind12.7 mph S
Humidity9%
Visibility6.2 mi
Dew point25°
Mon, 1095° / 58°0Clear
95 °Clear

Arco, Monday, 10 August

Clear. High 95°, low 58°.

Pressure29.80 inHg
Wind13.2 mph SW
Humidity9%
Visibility6.2 mi
Dew point24°
Tue, 1196° / 63°0Clear
96 °Clear

Arco, Tuesday, 11 August

Clear. High 96°, low 63°.

Pressure29.88 inHg
Wind10.8 mph SE
Humidity9%
Visibility6.2 mi
Dew point21°
Wed, 1292° / 66°0Overcast
92 °Overcast

Arco, Wednesday, 12 August

Overcast. High 92°, low 66°.

Pressure29.83 inHg
Wind9.1 mph SE
Humidity11%
Visibility6.2 mi
Dew point24°
Thu, 1391° / 62°0Overcast
91 °Overcast

Arco, Thursday, 13 August

Overcast. High 91°, low 62°.

Pressure29.83 inHg
Wind11.3 mph W
Humidity16%
Visibility—
Dew point30°
Fri, 1476° / 67°0.05Light rain
76 °Light rain

Arco, Friday, 14 August

Light rain. High 76°, low 67°.

Pressure29.91 inHg
Wind9.8 mph W
Humidity36%
Visibility—
Dew point46°
Sat, 1579° / 61°0.24Light rain
79 °Light rain

Arco, Saturday, 15 August

Light rain. High 79°, low 61°.

Pressure30.09 inHg
Wind15.8 mph NW
Humidity54%
Visibility—
Dew point49°
Sun, 1686° / 57°0.01Light rain
86 °Light rain

Arco, Sunday, 16 August

Light rain. High 86°, low 57°.

Pressure30.03 inHg
Wind7.2 mph N
Humidity27%
Visibility—
Dew point40°
Mon, 1789° / 63°0Overcast
89 °Overcast

Arco, Monday, 17 August

Overcast. High 89°, low 63°.

Pressure30.03 inHg
Wind13.5 mph S
Humidity25%
Visibility—
Dew point40°
Tue, 1886° / 67°0.01Light rain
86 °Light rain

Arco, Tuesday, 18 August

Light rain. High 86°, low 67°.

Pressure29.97 inHg
Wind21.5 mph SW
Humidity35%
Visibility—
Dew point46°
Wed, 1990° / 62°0Clear
90 °Clear

Arco, Wednesday, 19 August

Clear. High 90°, low 62°.

Pressure29.97 inHg
Wind8.8 mph SE
Humidity32%
Visibility—
Dew point45°
Thu, 2093° / 66°0Partly cloudy
93 °Partly cloudy

Arco, Thursday, 20 August

Partly cloudy. High 93°, low 66°.

Pressure29.91 inHg
Wind15.9 mph S
Humidity30%
Visibility—
Dew point47°
Fri, 2182° / 67°0.22Rain
82 °Rain

Arco, Friday, 21 August

Rain. High 82°, low 67°.

Pressure30.03 inHg
Wind6 mph S
Humidity56%
Visibility—
Dew point56°
Sat, 2286° / 62°0.01Light rain
86 °Light rain

Arco, Saturday, 22 August

Light rain. High 86°, low 62°.

Pressure29.94 inHg
Wind18.2 mph SW
Humidity36%
Visibility—
Dew point49°
Sun, 2387° / 63°0.02Light rain
87 °Light rain

Arco, Sunday, 23 August

Light rain. High 87°, low 63°.

Pressure29.91 inHg
Wind21 mph SW
Humidity16%
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 Arco, ID 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 Arco, ID 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.