Monthly outlook for Hartline, WA: average high 53.9°, average low 36°. That is 1.6° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 5 days and 0.8 inches. The warmest day looks like 21 October (64.4°), the coolest 27 October (28.7°).
53.9°/36°
Average high / low
+1.6°
Above normal
0 / 5
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
55.4°
52.6°
+1.5°
31 October – 9 November
51.4°
47.2°
+2.3°
10 November – 19 November
at normal
43.3°
—
October records over 66 years
82.9°1 October 1992All-time high
14.2°31 October 1984All-time low
Thu, 2262° / 41°0
62 °
Hartline, Thursday, 22 October
Overcast. High 62°, low 41°.
Pressure29.83 inHg
Wind2.5 mph N
Humidity42%
Visibility6.2 mi
Dew point38°
Fri, 2359° / 45°0
59 °
Hartline, Friday, 23 October
Clear. High 59°, low 45°.
Pressure30.09 inHg
Wind19.2 mph NW
Humidity39%
Visibility6.2 mi
Dew point21°
Sat, 2455° / 36°0
55 °
Hartline, Saturday, 24 October
Overcast. High 55°, low 36°.
Pressure30.18 inHg
Wind5.4 mph SE
Humidity54%
Visibility6.2 mi
Dew point32°
Sun, 2561° / 41°0
61 °
Hartline, Sunday, 25 October
Clear. High 61°, low 41°.
Pressure30.15 inHg
Wind6.5 mph N
Humidity45%
Visibility—
Dew point31°
Mon, 2662° / 38°0
62 °
Hartline, Monday, 26 October
Overcast. High 62°, low 38°.
Pressure30.03 inHg
Wind7.3 mph N
Humidity44%
Visibility—
Dew point33°
Tue, 2743° / 29°0
43 °
Hartline, Tuesday, 27 October
Clear. High 43°, low 29°.
Pressure30.36 inHg
Wind6.4 mph E
Humidity70%
Visibility—
Dew point28°
Wed, 2847° / 30°0
47 °
Hartline, Wednesday, 28 October
Overcast. High 47°, low 30°.
Pressure30.42 inHg
Wind7.6 mph N
Humidity54%
Visibility—
Dew point24°
Thu, 2949° / 32°0
49 °
Hartline, Thursday, 29 October
Overcast. High 49°, low 32°.
Pressure30.18 inHg
Wind5.6 mph N
Humidity54%
Visibility—
Dew point26°
Fri, 3051° / 36°0
51 °
Hartline, Friday, 30 October
Partly cloudy. High 51°, low 36°.
Pressure29.88 inHg
Wind6.9 mph NE
Humidity47%
Visibility—
Dew point26°
Sat, 3153° / 39°0
53 °
Hartline, Saturday, 31 October
Overcast. High 53°, low 39°.
Pressure29.83 inHg
Wind4.9 mph S
Humidity53%
Visibility—
Dew point31°
Sun, 0155° / 39°0
55 °
Hartline, Sunday, 1 November
Clear. High 55°, low 39°.
Pressure29.83 inHg
Wind5.5 mph S
Humidity57%
Visibility—
Dew point34°
Mon, 0255° / 42°0
55 °
Hartline, Monday, 2 November
Overcast. High 55°, low 42°.
Pressure29.74 inHg
Wind14.5 mph NW
Humidity62%
Visibility—
Dew point37°
Tue, 0350° / 32°0
50 °
Hartline, Tuesday, 3 November
Clear. High 50°, low 32°.
Pressure30.24 inHg
Wind14.2 mph N
Humidity39%
Visibility—
Dew point19°
Wed, 0448° / 30°0
48 °
Hartline, Wednesday, 4 November
Clear. High 48°, low 30°.
Pressure30.30 inHg
Wind6.7 mph N
Humidity41%
Visibility—
Dew point18°
Thu, 0547° / 30°0
47 °
Hartline, Thursday, 5 November
Clear. High 47°, low 30°.
Pressure30.39 inHg
Wind6.6 mph N
Humidity38%
Visibility—
Dew point16°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0646° / 35°0.06
46 °
Hartline, Friday, 6 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.06 in
Chance of precipitation35%
Record high60° (2006)
Record low19° (2003)
Sat, 0746° / 35°0.07
46 °
Hartline, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.07 in
Chance of precipitation28%
Record high58° (2006)
Record low22° (2003)
Sun, 0846° / 34°0.05
46 °
Hartline, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.05 in
Chance of precipitation20%
Record high59° (2016)
Record low25° (1977)
Mon, 0945° / 34°0.07
45 °
Hartline, Monday, 9 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.07 in
Chance of precipitation33%
Record high60° (1989)
Record low22° (1986)
Tue, 1045° / 33°0.05
45 °
Hartline, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.05 in
Chance of precipitation28%
Record high59° (1989)
Record low15° (2000)
Wed, 1145° / 33°0.06
45 °
Hartline, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.06 in
Chance of precipitation30%
Record high57° (1990)
Record low9° (2000)
Thu, 1245° / 33°0.06
45 °
Hartline, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high61° (1999)
Record low15° (1985)
Fri, 1344° / 33°0.08
44 °
Hartline, Friday, 13 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.08 in
Chance of precipitation35%
Record high55° (1999)
Record low13° (2000)
Sat, 1444° / 33°0.04
44 °
Hartline, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.04 in
Chance of precipitation22%
Record high60° (2021)
Record low11° (2000)
Sun, 1543° / 32°0.06
43 °
Hartline, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high43°
Average low32°
Average precipitation0.06 in
Chance of precipitation35%
Record high58° (2021)
Record low14° (2000)
Mon, 1642° / 32°0.07
42 °
Hartline, Monday, 16 November
Climate normal for this date — 60-year average.
Average high42°
Average low32°
Average precipitation0.07 in
Chance of precipitation33%
Record high56° (1999)
Record low18° (2014)
Tue, 1743° / 32°0.08
43 °
Hartline, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high43°
Average low32°
Average precipitation0.08 in
Chance of precipitation35%
Record high56° (1976)
Record low16° (2000)
Wed, 1842° / 31°0.04
42 °
Hartline, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.04 in
Chance of precipitation28%
Record high54° (2003)
Record low15° (1985)
Thu, 1941° / 30°0.09
41 °
Hartline, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high41°
Average low30°
Average precipitation0.09 in
Chance of precipitation43%
Record high51° (2012)
Record low-1° (1985)
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 Hartline, WA 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 Hartline, WA 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.