Monthly outlook for State Line, ID: average high 57.1°, average low 41°. That is 0.4° below the climate normal for October. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 16 October (69.5°), the coolest 21 October (36.1°).
57.1°/41°
Average high / low
−0.4°
Below normal
4 / 4
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
58.1°
59.2°
-0.6°
21 October – 30 October
55.3°
53.7°
+0.9°
31 October – 9 November
at normal
48.1°
—
October records over 66 years
85.8°1 October 1992All-time high
1.9°25 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Spokane Valley (10 mi).
Mon, 1255° / 42°0
55 °
State Line, Monday, 12 October
Clear. High 55°, low 42°.
Pressure30.03 inHg
Wind1.7 mph E
Humidity50%
Visibility6.2 mi
Dew point27°
Tue, 1354° / 38°0
54 °
State Line, Tuesday, 13 October
Clear. High 54°, low 38°.
Pressure30.21 inHg
Wind2.7 mph SW
Humidity50%
Visibility6.2 mi
Dew point32°
Wed, 1458° / 38°0
58 °
State Line, Wednesday, 14 October
Partly cloudy. High 58°, low 38°.
Pressure30.24 inHg
Wind4.3 mph W
Humidity41%
Visibility6.2 mi
Dew point32°
Thu, 1564° / 40°0
64 °
State Line, Thursday, 15 October
Clear. High 64°, low 40°.
Pressure30.47 inHg
Wind4.6 mph E
Humidity47%
Visibility6.2 mi
Dew point39°
Fri, 1669° / 42°0
69 °
State Line, Friday, 16 October
Clear. High 69°, low 42°.
Pressure30.27 inHg
Wind4.5 mph E
Humidity46%
Visibility—
Dew point37°
Sat, 1766° / 46°0
66 °
State Line, Saturday, 17 October
Overcast. High 66°, low 46°.
Pressure29.94 inHg
Wind9.7 mph SW
Humidity37%
Visibility—
Dew point33°
Sun, 1862° / 45°0
62 °
State Line, Sunday, 18 October
Partly cloudy. High 62°, low 45°.
Pressure30.06 inHg
Wind6.4 mph SW
Humidity43%
Visibility—
Dew point33°
Mon, 1957° / 44°0.06
57 °
State Line, Monday, 19 October
Light rain. High 57°, low 44°.
Pressure29.85 inHg
Wind7.7 mph SW
Humidity46%
Visibility—
Dew point33°
Tue, 2046° / 41°0.21
46 °
State Line, Tuesday, 20 October
Light rain. High 46°, low 41°.
Pressure29.91 inHg
Wind5.7 mph S
Humidity93%
Visibility—
Dew point41°
Wed, 2152° / 36°0
52 °
State Line, Wednesday, 21 October
Partly cloudy. High 52°, low 36°.
Pressure30.24 inHg
Wind7.4 mph SW
Humidity66%
Visibility—
Dew point34°
Thu, 2260° / 42°0
60 °
State Line, Thursday, 22 October
Overcast. High 60°, low 42°.
Pressure30.24 inHg
Wind4.7 mph NE
Humidity48%
Visibility—
Dew point33°
Fri, 2358° / 42°0.23
58 °
State Line, Friday, 23 October
Rain. High 58°, low 42°.
Pressure29.88 inHg
Wind4.7 mph SW
Humidity58%
Visibility—
Dew point37°
Sat, 2450° / 42°0.09
50 °
State Line, Saturday, 24 October
Light rain. High 50°, low 42°.
Pressure30.00 inHg
Wind6.7 mph SW
Humidity78%
Visibility—
Dew point38°
Sun, 2555° / 37°0
55 °
State Line, Sunday, 25 October
Overcast. High 55°, low 37°.
Pressure30.09 inHg
Wind2.8 mph E
Humidity52%
Visibility—
Dew point31°
Mon, 2657° / 36°0
57 °
State Line, Monday, 26 October
Partly cloudy. High 57°, low 36°.
Pressure30.21 inHg
Wind3.3 mph NE
Humidity55%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2752° / 36°0.06
52 °
State Line, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.06 in
Chance of precipitation33%
Record high67° (1965)
Record low15° (2020)
Wed, 2852° / 36°0.08
52 °
State Line, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.08 in
Chance of precipitation38%
Record high65° (1987)
Record low19° (2023)
Thu, 2951° / 34°0.09
51 °
State Line, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.09 in
Chance of precipitation35%
Record high67° (1983)
Record low17° (2019)
Fri, 3050° / 35°0.07
50 °
State Line, Friday, 30 October
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.07 in
Chance of precipitation28%
Record high67° (2008)
Record low15° (2019)
Sat, 3150° / 35°0.09
50 °
State Line, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.09 in
Chance of precipitation32%
Record high68° (1988)
Record low17° (1984)
Sun, 0149° / 34°0.1
49 °
State Line, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.1 in
Chance of precipitation38%
Record high67° (1965)
Record low20° (2002)
Mon, 0249° / 35°0.1
49 °
State Line, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.1 in
Chance of precipitation38%
Record high64° (1981)
Record low21° (2002)
Tue, 0349° / 35°0.06
49 °
State Line, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.06 in
Chance of precipitation30%
Record high63° (1975)
Record low22° (2002)
Wed, 0449° / 35°0.14
49 °
State Line, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.14 in
Chance of precipitation45%
Record high67° (1975)
Record low22° (2017)
Thu, 0548° / 34°0.08
48 °
State Line, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.08 in
Chance of precipitation40%
Record high65° (1975)
Record low19° (2003)
Fri, 0647° / 34°0.1
47 °
State Line, Friday, 6 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.1 in
Chance of precipitation52%
Record high62° (2012)
Record low16° (1994)
Sat, 0747° / 33°0.13
47 °
State Line, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.13 in
Chance of precipitation45%
Record high62° (1999)
Record low14° (2017)
Sun, 0846° / 33°0.07
46 °
State Line, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.07 in
Chance of precipitation30%
Record high63° (2016)
Record low17° (2022)
Mon, 0946° / 32°0.09
46 °
State Line, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.09 in
Chance of precipitation43%
Record high60° (2016)
Record low12° (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 State Line, 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 State Line, 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.