Monthly outlook for Porthill, ID: average high 50.7°, average low 34.2°. That is 0.1° above the climate normal for October. Precipitation is expected on 8 days (about 1.8 inches), against a normal of 7 days and 2.1 inches. The warmest day looks like 19 October (63°), the coolest 30 October (29.8°).
50.7°/34.2°
Average high / low
+0.1°
Above normal
8 / 7
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
54.7°
52.7°
+1.1°
28 October – 6 November
44.2°
46.4°
-1.2°
7 November – 16 November
at normal
42.5°
—
October records over 66 years
84.7°1 October 1992All-time high
4.6°25 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Copeland (8 mi).
Mon, 1963° / 36°0
63 °
Porthill, Monday, 19 October
Overcast. High 63°, low 36°.
Pressure29.97 inHg
Wind1.5 mph NE
Humidity52%
Visibility6.2 mi
Dew point34°
Tue, 2059° / 39°0
59 °
Porthill, Tuesday, 20 October
Clear. High 59°, low 39°.
Pressure30.12 inHg
Wind1.4 mph SW
Humidity55%
Visibility6.2 mi
Dew point40°
Wed, 2160° / 35°0
60 °
Porthill, Wednesday, 21 October
Mostly clear. High 60°, low 35°.
Pressure30.03 inHg
Wind1.7 mph NE
Humidity56%
Visibility6.2 mi
Dew point39°
Thu, 2254° / 36°0.27
54 °
Porthill, Thursday, 22 October
Rain. High 54°, low 36°.
Pressure29.88 inHg
Wind1.7 mph SW
Humidity64%
Visibility6.2 mi
Dew point40°
Fri, 2346° / 37°0.36
46 °
Porthill, Friday, 23 October
Light rain. High 46°, low 37°.
Pressure29.83 inHg
Wind3.6 mph SE
Humidity95%
Visibility—
Dew point44°
Sat, 2447° / 31°0
47 °
Porthill, Saturday, 24 October
Overcast. High 47°, low 31°.
Pressure30.21 inHg
Wind3.9 mph E
Humidity72%
Visibility—
Dew point31°
Sun, 2549° / 38°0.04
49 °
Porthill, Sunday, 25 October
Snow. High 49°, low 38°.
Pressure30.21 inHg
Wind3.3 mph SE
Humidity73%
Visibility—
Dew point36°
Mon, 2653° / 34°0
53 °
Porthill, Monday, 26 October
Overcast. High 53°, low 34°.
Pressure30.15 inHg
Wind3.2 mph E
Humidity66%
Visibility—
Dew point34°
Tue, 2753° / 36°0.24
53 °
Porthill, Tuesday, 27 October
Rain. High 53°, low 36°.
Pressure29.88 inHg
Wind3.2 mph N
Humidity65%
Visibility—
Dew point34°
Wed, 2844° / 37°0.13
44 °
Porthill, Wednesday, 28 October
Snow. High 44°, low 37°.
Pressure29.74 inHg
Wind5.9 mph S
Humidity98%
Visibility—
Dew point43°
Thu, 2942° / 31°0.14
42 °
Porthill, Thursday, 29 October
Snow. High 42°, low 31°.
Pressure29.71 inHg
Wind3.5 mph W
Humidity97%
Visibility—
Dew point38°
Fri, 3042° / 30°0.02
42 °
Porthill, Friday, 30 October
Light snow. High 42°, low 30°.
Pressure30.09 inHg
Wind3.4 mph SW
Humidity73%
Visibility—
Dew point30°
Sat, 3145° / 30°0.03
45 °
Porthill, Saturday, 31 October
Snow. High 45°, low 30°.
Pressure30.12 inHg
Wind4.7 mph SW
Humidity77%
Visibility—
Dew point33°
Sun, 0145° / 34°0.17
45 °
Porthill, Sunday, 1 November
Snow. High 45°, low 34°.
Pressure30.06 inHg
Wind4.5 mph S
Humidity92%
Visibility—
Dew point39°
Mon, 0247° / 30°0.38
47 °
Porthill, Monday, 2 November
Snow. High 47°, low 30°.
Pressure29.53 inHg
Wind4.6 mph S
Humidity79%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0346° / 35°0.11
46 °
Porthill, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.11 in
Chance of precipitation43%
Record high59° (2020)
Record low14° (1994)
Wed, 0446° / 35°0.22
46 °
Porthill, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.22 in
Chance of precipitation57%
Record high60° (1975)
Record low11° (1961)
Thu, 0545° / 34°0.14
45 °
Porthill, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.14 in
Chance of precipitation47%
Record high60° (2016)
Record low9° (1971)
Fri, 0644° / 33°0.19
44 °
Porthill, Friday, 6 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.19 in
Chance of precipitation62%
Record high56° (2012)
Record low9° (1971)
Sat, 0744° / 33°0.18
44 °
Porthill, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.18 in
Chance of precipitation63%
Record high56° (2006)
Record low12° (2017)
Sun, 0844° / 32°0.13
44 °
Porthill, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.13 in
Chance of precipitation62%
Record high60° (2016)
Record low10° (1966)
Mon, 0943° / 32°0.13
43 °
Porthill, Monday, 9 November
Climate normal for this date — 60-year average.
Average high43°
Average low32°
Average precipitation0.13 in
Chance of precipitation55%
Record high61° (2016)
Record low8° (1986)
Tue, 1042° / 31°0.13
42 °
Porthill, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.13 in
Chance of precipitation52%
Record high56° (2016)
Record low6° (1986)
Wed, 1142° / 31°0.15
42 °
Porthill, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.15 in
Chance of precipitation47%
Record high57° (2016)
Record low-1° (1985)
Thu, 1243° / 32°0.17
43 °
Porthill, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low32°
Average precipitation0.17 in
Chance of precipitation58%
Record high57° (2016)
Record low-1° (1985)
Fri, 1342° / 32°0.16
42 °
Porthill, Friday, 13 November
Climate normal for this date — 60-year average.
Average high42°
Average low32°
Average precipitation0.16 in
Chance of precipitation53%
Record high53° (2025)
Record low15° (1985)
Sat, 1442° / 32°0.18
42 °
Porthill, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high42°
Average low32°
Average precipitation0.18 in
Chance of precipitation52%
Record high58° (1999)
Record low11° (1982)
Sun, 1542° / 31°0.14
42 °
Porthill, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.14 in
Chance of precipitation57%
Record high57° (2001)
Record low10° (1964)
Mon, 1641° / 32°0.21
41 °
Porthill, Monday, 16 November
Climate normal for this date — 60-year average.
Average high41°
Average low32°
Average precipitation0.21 in
Chance of precipitation67%
Record high54° (1999)
Record low14° (1961)
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 Porthill, 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 Porthill, 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.