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As of 18:59 MDT

Weather in Roy Summit, ID

70°Current weather

Roy Summit, Friday, 9 October, 18:59

Light rain. Feels like 68°. High 77°, low 48°.

Pressure29.65 inHg
Wind6.6 mph S
Humidity29%
Visibility6.2 mi
Dew point37°
Sat, 1070° / 48°0.28Rain
70 °Rain

Roy Summit, Saturday, 10 October

Rain. High 70°, low 48°.

Pressure29.62 inHg
Wind13.7 mph S
Humidity59%
Visibility6.2 mi
Dew point46°
Sun, 1150° / 38°1.44Snow
50 °Snow

Roy Summit, Sunday, 11 October

Snow. High 50°, low 38°.

Pressure29.68 inHg
Wind5.3 mph N
Humidity97%
Visibility1.7 mi
Dew point40°
Mon, 1254° / 38°0.15Rain
54 °Rain

Roy Summit, Monday, 12 October

Rain. High 54°, low 38°.

Pressure29.83 inHg
Wind4.2 mph SE
Humidity68%
Visibility6.2 mi
Dew point40°
Tue, 1343° / 38°0.49Rain
43 °Rain

Roy Summit, Tuesday, 13 October

Rain. High 43°, low 38°.

Pressure29.97 inHg
Wind8.7 mph NW
Humidity90%
Visibility2.3 mi
Dew point37°
Wed, 1446° / 40°0.22Light rain
46 °Light rain

Roy Summit, Wednesday, 14 October

Light rain. High 46°, low 40°.

Pressure30.15 inHg
Wind6.2 mph NW
Humidity83%
Visibility—
Dew point38°
Thu, 1557° / 38°0Overcast
57 °Overcast

Roy Summit, Thursday, 15 October

Overcast. High 57°, low 38°.

Pressure30.30 inHg
Wind7.7 mph NW
Humidity64%
Visibility—
Dew point37°
Fri, 1661° / 43°0Mostly clear
61 °Mostly clear

Roy Summit, Friday, 16 October

Mostly clear. High 61°, low 43°.

Pressure30.39 inHg
Wind5.2 mph S
Humidity46%
Visibility—
Dew point34°
Sat, 1761° / 45°0Overcast
61 °Overcast

Roy Summit, Saturday, 17 October

Overcast. High 61°, low 45°.

Pressure30.27 inHg
Wind9.6 mph S
Humidity42%
Visibility—
Dew point33°
Sun, 1865° / 48°0Overcast
65 °Overcast

Roy Summit, Sunday, 18 October

Overcast. High 65°, low 48°.

Pressure30.18 inHg
Wind6.1 mph S
Humidity36%
Visibility—
Dew point32°
Mon, 1965° / 48°0Clear
65 °Clear

Roy Summit, Monday, 19 October

Clear. High 65°, low 48°.

Pressure30.12 inHg
Wind8.9 mph S
Humidity36%
Visibility—
Dew point33°
Tue, 2066° / 49°0Clear
66 °Clear

Roy Summit, Tuesday, 20 October

Clear. High 66°, low 49°.

Pressure30.09 inHg
Wind10.9 mph S
Humidity34%
Visibility—
Dew point32°
Wed, 2167° / 50°0Clear
67 °Clear

Roy Summit, Wednesday, 21 October

Clear. High 67°, low 50°.

Pressure30.06 inHg
Wind8.5 mph S
Humidity31%
Visibility—
Dew point31°
Thu, 2254° / 47°0.04Light rain
54 °Light rain

Roy Summit, Thursday, 22 October

Light rain. High 54°, low 47°.

Pressure30.03 inHg
Wind9.3 mph NW
Humidity80%
Visibility—
Dew point42°
Fri, 2358° / 40°0.01Light rain
58 °Light rain

Roy Summit, Friday, 23 October

Light rain. High 58°, low 40°.

Pressure29.80 inHg
Wind8.9 mph E
Humidity44%
Visibility—
Dew point30°
Sat, 2460° / 41°0.09Light rain
60 °Light rain

Roy Summit, Saturday, 24 October

Light rain. High 60°, low 41°.

Pressure29.83 inHg
Wind10 mph N
Humidity57%
Visibility—
Dew point39°

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 Roy Summit, 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 Roy Summit, 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.