Monthly outlook for St. Charles, ID: average high 56.2°, average low 40.9°. That is 4° above the climate normal for October. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 5 days and 1.1 inches. The warmest day looks like 3 November (65.3°), the coolest 25 October (33°).
56.2°/40.9°
Average high / low
+4°
Above normal
4 / 5
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
54.9°
51.1°
+2.1°
30 October – 8 November
58.3°
45°
+7.4°
9 November – 18 November
at normal
40.3°
—
October records over 66 years
80.4°1 October 2010All-time high
0.9°28 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Garden City (12 mi).
Wed, 2164° / 46°0.1
64 °
St. Charles, Wednesday, 21 October
Rain. High 64°, low 46°.
Pressure30.12 inHg
Wind2.9 mph SE
Humidity70%
Visibility6.2 mi
Dew point44°
Thu, 2261° / 46°0.1
61 °
St. Charles, Thursday, 22 October
Rain. High 61°, low 46°.
Pressure30.00 inHg
Wind4.3 mph SE
Humidity71%
Visibility6.2 mi
Dew point46°
Fri, 2352° / 41°0.65
52 °
St. Charles, Friday, 23 October
Rain. High 52°, low 41°.
Pressure29.80 inHg
Wind5.4 mph S
Humidity52%
Visibility6.2 mi
Dew point35°
Sat, 2445° / 37°0.03
45 °
St. Charles, Saturday, 24 October
Light rain. High 45°, low 37°.
Pressure30.21 inHg
Wind4.5 mph SE
Humidity76%
Visibility6.2 mi
Dew point36°
Sun, 2549° / 33°0
49 °
St. Charles, Sunday, 25 October
Mostly clear. High 49°, low 33°.
Pressure30.21 inHg
Wind3.3 mph SE
Humidity68%
Visibility—
Dew point33°
Mon, 2652° / 33°0
52 °
St. Charles, Monday, 26 October
Overcast. High 52°, low 33°.
Pressure30.36 inHg
Wind6.8 mph W
Humidity64%
Visibility—
Dew point34°
Tue, 2754° / 38°0
54 °
St. Charles, Tuesday, 27 October
Clear. High 54°, low 38°.
Pressure30.21 inHg
Wind6.7 mph W
Humidity39%
Visibility—
Dew point24°
Wed, 2854° / 37°0
54 °
St. Charles, Wednesday, 28 October
Mostly clear. High 54°, low 37°.
Pressure30.21 inHg
Wind5.9 mph SE
Humidity42%
Visibility—
Dew point25°
Thu, 2954° / 40°0
54 °
St. Charles, Thursday, 29 October
Partly cloudy. High 54°, low 40°.
Pressure30.06 inHg
Wind5.1 mph W
Humidity34%
Visibility—
Dew point22°
Fri, 3055° / 41°0
55 °
St. Charles, Friday, 30 October
Overcast. High 55°, low 41°.
Pressure29.83 inHg
Wind14.5 mph W
Humidity35%
Visibility—
Dew point24°
Sat, 3151° / 40°0
51 °
St. Charles, Saturday, 31 October
Partly cloudy. High 51°, low 40°.
Pressure29.74 inHg
Wind15.3 mph W
Humidity30%
Visibility—
Dew point19°
Sun, 0154° / 37°0
54 °
St. Charles, Sunday, 1 November
Partly cloudy. High 54°, low 37°.
Pressure30.03 inHg
Wind5 mph W
Humidity29%
Visibility—
Dew point17°
Mon, 0260° / 42°0
60 °
St. Charles, Monday, 2 November
Overcast. High 60°, low 42°.
Pressure30.24 inHg
Wind3.9 mph W
Humidity31%
Visibility—
Dew point24°
Tue, 0365° / 48°0
65 °
St. Charles, Tuesday, 3 November
Mostly clear. High 65°, low 48°.
Pressure30.27 inHg
Wind2.9 mph S
Humidity31%
Visibility—
Dew point28°
Wed, 0464° / 50°0
64 °
St. Charles, Wednesday, 4 November
Overcast. High 64°, low 50°.
Pressure30.18 inHg
Wind7.4 mph W
Humidity39%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0545° / 31°0.08
45 °
St. Charles, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.08 in
Chance of precipitation33%
Record high62° (2020)
Record low12° (1961)
Fri, 0645° / 31°0.05
45 °
St. Charles, Friday, 6 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.05 in
Chance of precipitation28%
Record high64° (2020)
Record low9° (1971)
Sat, 0744° / 30°0.09
44 °
St. Charles, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.09 in
Chance of precipitation32%
Record high62° (1999)
Record low4° (2003)
Sun, 0843° / 29°0.11
43 °
St. Charles, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high43°
Average low29°
Average precipitation0.11 in
Chance of precipitation40%
Record high58° (2016)
Record low11° (2018)
Mon, 0942° / 28°0.11
42 °
St. Charles, Monday, 9 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.11 in
Chance of precipitation38%
Record high59° (2016)
Record low11° (1966)
Tue, 1041° / 27°0.07
41 °
St. Charles, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.07 in
Chance of precipitation42%
Record high59° (2016)
Record low6° (1985)
Wed, 1141° / 27°0.07
41 °
St. Charles, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.07 in
Chance of precipitation28%
Record high59° (1999)
Record low1° (2000)
Thu, 1241° / 28°0.09
41 °
St. Charles, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.09 in
Chance of precipitation35%
Record high61° (1999)
Record low2° (2014)
Fri, 1341° / 27°0.07
41 °
St. Charles, Friday, 13 November
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.07 in
Chance of precipitation40%
Record high59° (1999)
Record low5° (2014)
Sat, 1440° / 26°0.11
40 °
St. Charles, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.11 in
Chance of precipitation35%
Record high60° (1999)
Record low3° (2000)
Sun, 1540° / 24°0.04
40 °
St. Charles, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high40°
Average low24°
Average precipitation0.04 in
Chance of precipitation18%
Record high61° (1999)
Record low0° (1997)
Mon, 1639° / 26°0.06
39 °
St. Charles, Monday, 16 November
Climate normal for this date — 60-year average.
Average high39°
Average low26°
Average precipitation0.06 in
Chance of precipitation33%
Record high60° (1999)
Record low-2° (2014)
Tue, 1739° / 26°0.11
39 °
St. Charles, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high39°
Average low26°
Average precipitation0.11 in
Chance of precipitation38%
Record high56° (1999)
Record low4° (2014)
Wed, 1838° / 25°0.11
38 °
St. Charles, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high38°
Average low25°
Average precipitation0.11 in
Chance of precipitation42%
Record high55° (2008)
Record low7° (2000)
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 St. Charles, 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 St. Charles, 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.