Monthly outlook for Saint Johns, ID: average high 57.8°, average low 42.4°. That is 3.5° above the climate normal for October. Precipitation is expected on 5 days (about 1.9 inches), against a normal of 4 days and 0.9 inches. The warmest day looks like 21 October (69.7°), the coolest 25 October (32.5°).
57.8°/42.4°
Average high / low
+3.5°
Above normal
5 / 4
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
58.6°
53.6°
+2.7°
30 October – 8 November
56.6°
47.6°
+5°
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 (13 mi).
Wed, 2170° / 42°0
70 °
Saint Johns, Wednesday, 21 October
Clear. High 70°, low 42°.
Pressure30.06 inHg
Wind3.8 mph S
Humidity51%
Visibility6.2 mi
Dew point43°
Thu, 2264° / 46°0.13
64 °
Saint Johns, Thursday, 22 October
Rain. High 64°, low 46°.
Pressure29.91 inHg
Wind4.6 mph SE
Humidity51%
Visibility6.2 mi
Dew point44°
Fri, 2349° / 37°0.98
49 °
Saint Johns, Friday, 23 October
Rain. High 49°, low 37°.
Pressure29.83 inHg
Wind8.9 mph SW
Humidity93%
Visibility1.8 mi
Dew point42°
Sat, 2447° / 35°0.11
47 °
Saint Johns, Saturday, 24 October
Light rain. High 47°, low 35°.
Pressure30.30 inHg
Wind5 mph N
Humidity70%
Visibility—
Dew point33°
Sun, 2555° / 32°0
55 °
Saint Johns, Sunday, 25 October
Clear. High 55°, low 32°.
Pressure30.27 inHg
Wind3.8 mph N
Humidity59%
Visibility—
Dew point33°
Mon, 2660° / 43°0
60 °
Saint Johns, Monday, 26 October
Clear. High 60°, low 43°.
Pressure30.18 inHg
Wind3.5 mph NE
Humidity46%
Visibility—
Dew point33°
Tue, 2758° / 43°0
58 °
Saint Johns, Tuesday, 27 October
Partly cloudy. High 58°, low 43°.
Pressure30.24 inHg
Wind7.2 mph E
Humidity40%
Visibility—
Dew point29°
Wed, 2858° / 39°0
58 °
Saint Johns, Wednesday, 28 October
Clear. High 58°, low 39°.
Pressure30.12 inHg
Wind5.2 mph E
Humidity28%
Visibility—
Dew point19°
Thu, 2957° / 44°0.11
57 °
Saint Johns, Thursday, 29 October
Light rain. High 57°, low 44°.
Pressure29.91 inHg
Wind5.8 mph SW
Humidity60%
Visibility—
Dew point38°
Fri, 3060° / 43°0.01
60 °
Saint Johns, Friday, 30 October
Light rain. High 60°, low 43°.
Pressure29.85 inHg
Wind7.7 mph S
Humidity55%
Visibility—
Dew point38°
Sat, 3149° / 45°0.45
49 °
Saint Johns, Saturday, 31 October
Rain. High 49°, low 45°.
Pressure29.88 inHg
Wind7.4 mph SW
Humidity86%
Visibility—
Dew point44°
Sun, 0155° / 42°0.01
55 °
Saint Johns, Sunday, 1 November
Light rain. High 55°, low 42°.
Pressure30.15 inHg
Wind11.6 mph SW
Humidity60%
Visibility—
Dew point38°
Mon, 0259° / 43°0
59 °
Saint Johns, Monday, 2 November
Clear. High 59°, low 43°.
Pressure30.33 inHg
Wind4 mph S
Humidity50%
Visibility—
Dew point35°
Tue, 0364° / 45°0
64 °
Saint Johns, Tuesday, 3 November
Mostly clear. High 64°, low 45°.
Pressure30.12 inHg
Wind4.9 mph S
Humidity46%
Visibility—
Dew point36°
Wed, 0453° / 50°0.02
53 °
Saint Johns, Wednesday, 4 November
Light rain. High 53°, low 50°.
Pressure29.74 inHg
Wind5.5 mph SE
Humidity67%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0548° / 33°0.05
48 °
Saint Johns, 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 °
Saint Johns, 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 °
Saint Johns, 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 °
Saint Johns, 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 °
Saint Johns, 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 °
Saint Johns, 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 °
Saint Johns, 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 °
Saint Johns, 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 °
Saint Johns, 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 °
Saint Johns, 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 °
Saint Johns, 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 °
Saint Johns, 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 °
Saint Johns, 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 °
Saint Johns, 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 Saint Johns, 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 Saint Johns, 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.