Monthly outlook for State Line, ID: average high 58.3°, average low 39.9°. That is 0° above the climate normal for October. Precipitation is expected on 2 days (about 0.1 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 17 October (66.2°), the coolest 11 October (33.3°).
58.3°/39.9°
Average high / low
+0°
Above normal
2 / 4
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
58.5°
59.5°
-0.5°
20 October – 29 October
58°
54.5°
+1.9°
30 October – 8 November
at normal
48.5°
—
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).
Sun, 1150° / 33°0
50 °
State Line, Sunday, 11 October
Overcast. High 50°, low 33°.
Pressure29.97 inHg
Wind13.7 mph NE
Humidity56%
Visibility6.2 mi
Dew point26°
Mon, 1253° / 34°0
53 °
State Line, Monday, 12 October
Clear. High 53°, low 34°.
Pressure30.06 inHg
Wind2.8 mph E
Humidity48%
Visibility6.2 mi
Dew point28°
Tue, 1355° / 35°0
55 °
State Line, Tuesday, 13 October
Clear. High 55°, low 35°.
Pressure30.15 inHg
Wind2.8 mph SW
Humidity46%
Visibility6.2 mi
Dew point29°
Wed, 1459° / 39°0
59 °
State Line, Wednesday, 14 October
Partly cloudy. High 59°, low 39°.
Pressure30.21 inHg
Wind6 mph W
Humidity47%
Visibility—
Dew point32°
Thu, 1565° / 40°0
65 °
State Line, Thursday, 15 October
Mostly clear. High 65°, low 40°.
Pressure30.42 inHg
Wind3.3 mph E
Humidity42%
Visibility—
Dew point32°
Fri, 1665° / 41°0
65 °
State Line, Friday, 16 October
Partly cloudy. High 65°, low 41°.
Pressure30.42 inHg
Wind6.1 mph NE
Humidity42%
Visibility—
Dew point31°
Sat, 1766° / 42°0
66 °
State Line, Saturday, 17 October
Overcast. High 66°, low 42°.
Pressure30.06 inHg
Wind5.7 mph W
Humidity35%
Visibility—
Dew point30°
Sun, 1862° / 45°0
62 °
State Line, Sunday, 18 October
Overcast. High 62°, low 45°.
Pressure30.03 inHg
Wind8.5 mph SW
Humidity49%
Visibility—
Dew point37°
Mon, 1955° / 43°0.08
55 °
State Line, Monday, 19 October
Light rain. High 55°, low 43°.
Pressure30.00 inHg
Wind7.8 mph SW
Humidity55%
Visibility—
Dew point37°
Tue, 2053° / 37°0
53 °
State Line, Tuesday, 20 October
Partly cloudy. High 53°, low 37°.
Pressure30.27 inHg
Wind4.9 mph SE
Humidity70%
Visibility—
Dew point38°
Wed, 2158° / 40°0.01
58 °
State Line, Wednesday, 21 October
Light rain. High 58°, low 40°.
Pressure30.15 inHg
Wind13.1 mph SW
Humidity50%
Visibility—
Dew point33°
Thu, 2258° / 39°0
58 °
State Line, Thursday, 22 October
Overcast. High 58°, low 39°.
Pressure30.06 inHg
Wind4.2 mph NE
Humidity36%
Visibility—
Dew point24°
Fri, 2351° / 45°0.05
51 °
State Line, Friday, 23 October
Light rain. High 51°, low 45°.
Pressure29.88 inHg
Wind3.9 mph NE
Humidity51%
Visibility—
Dew point33°
Sat, 2464° / 44°0
64 °
State Line, Saturday, 24 October
Overcast. High 64°, low 44°.
Pressure30.18 inHg
Wind3.8 mph W
Humidity53%
Visibility—
Dew point39°
Sun, 2564° / 44°0
64 °
State Line, Sunday, 25 October
Overcast. High 64°, low 44°.
Pressure30.33 inHg
Wind3.8 mph NE
Humidity58%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2653° / 37°0.07
53 °
State Line, Monday, 26 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.07 in
Chance of precipitation40%
Record high70° (1986)
Record low7° (2020)
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)
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.