Monthly outlook for Holbrook Summit, ID: average high 54.2°, average low 38.7°. That is 1.5° above the climate normal for October. Precipitation is expected on 6 days (about 2.1 inches), against a normal of 4 days and 0.9 inches. The warmest day looks like 21 October (65.1°), the coolest 25 October (33.2°).
54.2°/38.7°
Average high / low
+1.5°
Above normal
6 / 4
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
56°
53.6°
+1.3°
30 October – 8 November
51.3°
47.6°
+2.1°
9 November – 18 November
at normal
42.2°
—
October records over 66 years
84.9°2 October 2010All-time high
5.7°27 October 1970All-time low
Climate normals and records are computed from the nearest reference point — Daniels (14 mi).
Wed, 2165° / 39°0
65 °
Holbrook Summit, Wednesday, 21 October
Clear. High 65°, low 39°.
Pressure30.06 inHg
Wind4.2 mph SE
Humidity54%
Visibility6.2 mi
Dew point43°
Thu, 2265° / 47°0.22
65 °
Holbrook Summit, Thursday, 22 October
Rain. High 65°, low 47°.
Pressure29.91 inHg
Wind5.8 mph SE
Humidity54%
Visibility6.2 mi
Dew point44°
Fri, 2348° / 37°1.14
48 °
Holbrook Summit, Friday, 23 October
Rain. High 48°, low 37°.
Pressure29.85 inHg
Wind8.1 mph SW
Humidity95%
Visibility1.2 mi
Dew point42°
Sat, 2449° / 37°0.04
49 °
Holbrook Summit, Saturday, 24 October
Light rain. High 49°, low 37°.
Pressure30.30 inHg
Wind6 mph N
Humidity67%
Visibility—
Dew point32°
Sun, 2556° / 33°0
56 °
Holbrook Summit, Sunday, 25 October
Clear. High 56°, low 33°.
Pressure30.24 inHg
Wind4.2 mph NW
Humidity56%
Visibility—
Dew point34°
Mon, 2655° / 38°0
55 °
Holbrook Summit, Monday, 26 October
Clear. High 55°, low 38°.
Pressure30.18 inHg
Wind4.4 mph NE
Humidity45%
Visibility—
Dew point28°
Tue, 2754° / 39°0
54 °
Holbrook Summit, Tuesday, 27 October
Overcast. High 54°, low 39°.
Pressure30.21 inHg
Wind6.6 mph E
Humidity40%
Visibility—
Dew point25°
Wed, 2854° / 35°0
54 °
Holbrook Summit, Wednesday, 28 October
Clear. High 54°, low 35°.
Pressure30.12 inHg
Wind5.5 mph E
Humidity29%
Visibility—
Dew point16°
Thu, 2952° / 39°0.09
52 °
Holbrook Summit, Thursday, 29 October
Light rain. High 52°, low 39°.
Pressure29.91 inHg
Wind6.5 mph SW
Humidity59%
Visibility—
Dew point34°
Fri, 3054° / 38°0.01
54 °
Holbrook Summit, Friday, 30 October
Light rain. High 54°, low 38°.
Pressure29.85 inHg
Wind9.9 mph S
Humidity55%
Visibility—
Dew point33°
Sat, 3144° / 40°0.51
44 °
Holbrook Summit, Saturday, 31 October
Rain. High 44°, low 40°.
Pressure29.88 inHg
Wind8.6 mph S
Humidity85%
Visibility—
Dew point38°
Sun, 0150° / 37°0
50 °
Holbrook Summit, Sunday, 1 November
Light rain. High 50°, low 37°.
Pressure30.18 inHg
Wind9.5 mph SW
Humidity62%
Visibility—
Dew point33°
Mon, 0255° / 37°0
55 °
Holbrook Summit, Monday, 2 November
Mostly clear. High 55°, low 37°.
Pressure30.33 inHg
Wind4 mph S
Humidity50%
Visibility—
Dew point31°
Tue, 0358° / 39°0
58 °
Holbrook Summit, Tuesday, 3 November
Partly cloudy. High 58°, low 39°.
Pressure30.12 inHg
Wind5.4 mph S
Humidity47%
Visibility—
Dew point31°
Wed, 0447° / 44°0.04
47 °
Holbrook Summit, Wednesday, 4 November
Light rain. High 47°, low 44°.
Pressure29.74 inHg
Wind6.4 mph S
Humidity77%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0548° / 33°0.05
48 °
Holbrook Summit, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.05 in
Chance of precipitation32%
Record high64° (1980)
Record low7° (1961)
Fri, 0647° / 33°0.04
47 °
Holbrook Summit, Friday, 6 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.04 in
Chance of precipitation27%
Record high65° (1999)
Record low2° (1971)
Sat, 0747° / 32°0.08
47 °
Holbrook Summit, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.08 in
Chance of precipitation37%
Record high64° (1999)
Record low14° (2000)
Sun, 0845° / 31°0.09
45 °
Holbrook Summit, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.09 in
Chance of precipitation35%
Record high61° (1976)
Record low13° (2017)
Mon, 0944° / 30°0.08
44 °
Holbrook Summit, Monday, 9 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.08 in
Chance of precipitation33%
Record high60° (2016)
Record low17° (1966)
Tue, 1044° / 30°0.05
44 °
Holbrook Summit, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.05 in
Chance of precipitation30%
Record high63° (2016)
Record low6° (2000)
Wed, 1144° / 30°0.06
44 °
Holbrook Summit, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.06 in
Chance of precipitation28%
Record high61° (1989)
Record low6° (2000)
Thu, 1244° / 29°0.07
44 °
Holbrook Summit, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.07 in
Chance of precipitation28%
Record high63° (1999)
Record low10° (2000)
Fri, 1343° / 29°0.06
43 °
Holbrook Summit, Friday, 13 November
Climate normal for this date — 60-year average.
Average high43°
Average low29°
Average precipitation0.06 in
Chance of precipitation37%
Record high62° (1999)
Record low5° (1978)
Sat, 1441° / 28°0.07
41 °
Holbrook Summit, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.07 in
Chance of precipitation27%
Record high64° (1999)
Record low-5° (1978)
Sun, 1542° / 27°0.02
42 °
Holbrook Summit, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high42°
Average low27°
Average precipitation0.02 in
Chance of precipitation20%
Record high62° (1999)
Record low-5° (1978)
Mon, 1641° / 28°0.04
41 °
Holbrook Summit, Monday, 16 November
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.04 in
Chance of precipitation27%
Record high62° (1999)
Record low2° (2014)
Tue, 1740° / 27°0.07
40 °
Holbrook Summit, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high40°
Average low27°
Average precipitation0.07 in
Chance of precipitation30%
Record high54° (1995)
Record low-3° (2014)
Wed, 1839° / 26°0.07
39 °
Holbrook Summit, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high39°
Average low26°
Average precipitation0.07 in
Chance of precipitation32%
Record high56° (1995)
Record low1° (2022)
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 Holbrook 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 Holbrook 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.