Monthly outlook for Hartline, WA: average high 54.9°, average low 39.7°. That is 2.5° above the climate normal for October. Precipitation is expected on 3 days (about 0.7 inches), against a normal of 5 days and 0.8 inches. The warmest day looks like 22 October (60.4°), the coolest 31 October (33.7°).
54.9°/39.7°
Average high / low
+2.5°
Above normal
3 / 5
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
55.4°
52°
+1.9°
1 November – 10 November
54.2°
46.8°
+4.1°
11 November – 20 November
at normal
42.9°
—
October records over 66 years
82.9°1 October 1992All-time high
14.2°31 October 1984All-time low
Fri, 2357° / 35°0
57 °
Hartline, Friday, 23 October
Clear. High 57°, low 35°.
Pressure30.15 inHg
Wind20.6 mph NW
Humidity39%
Visibility6.2 mi
Dew point18°
Sat, 2456° / 36°0
56 °
Hartline, Saturday, 24 October
Partly cloudy. High 56°, low 36°.
Pressure30.21 inHg
Wind5 mph SE
Humidity51%
Visibility6.2 mi
Dew point32°
Sun, 2552° / 42°0
52 °
Hartline, Sunday, 25 October
Overcast. High 52°, low 42°.
Pressure30.06 inHg
Wind7.5 mph N
Humidity48%
Visibility6.2 mi
Dew point31°
Mon, 2656° / 43°0.16
56 °
Hartline, Monday, 26 October
Light rain. High 56°, low 43°.
Pressure30.06 inHg
Wind7 mph N
Humidity62%
Visibility—
Dew point37°
Tue, 2758° / 43°0.02
58 °
Hartline, Tuesday, 27 October
Light rain. High 58°, low 43°.
Pressure30.06 inHg
Wind6.3 mph NW
Humidity71%
Visibility—
Dew point41°
Wed, 2857° / 40°0
57 °
Hartline, Wednesday, 28 October
Partly cloudy. High 57°, low 40°.
Pressure30.30 inHg
Wind8.4 mph N
Humidity59%
Visibility—
Dew point35°
Thu, 2955° / 38°0
55 °
Hartline, Thursday, 29 October
Partly cloudy. High 55°, low 38°.
Pressure30.06 inHg
Wind8 mph N
Humidity54%
Visibility—
Dew point32°
Fri, 3053° / 39°0
53 °
Hartline, Friday, 30 October
Overcast. High 53°, low 39°.
Pressure29.88 inHg
Wind6.5 mph SW
Humidity39%
Visibility—
Dew point24°
Sat, 3149° / 34°0
49 °
Hartline, Saturday, 31 October
Clear. High 49°, low 34°.
Pressure29.97 inHg
Wind3.6 mph NW
Humidity53%
Visibility—
Dew point28°
Sun, 0151° / 37°0
51 °
Hartline, Sunday, 1 November
Overcast. High 51°, low 37°.
Pressure30.09 inHg
Wind5.8 mph E
Humidity56%
Visibility—
Dew point29°
Mon, 0253° / 39°0
53 °
Hartline, Monday, 2 November
Overcast. High 53°, low 39°.
Pressure30.27 inHg
Wind9.4 mph E
Humidity48%
Visibility—
Dew point28°
Tue, 0357° / 37°0
57 °
Hartline, Tuesday, 3 November
Overcast. High 57°, low 37°.
Pressure30.03 inHg
Wind8.1 mph SE
Humidity40%
Visibility—
Dew point25°
Wed, 0458° / 39°0
58 °
Hartline, Wednesday, 4 November
Overcast. High 58°, low 39°.
Pressure29.88 inHg
Wind17.8 mph S
Humidity45%
Visibility—
Dew point29°
Thu, 0553° / 50°0.34
53 °
Hartline, Thursday, 5 November
Rain. High 53°, low 50°.
Pressure29.74 inHg
Wind24.4 mph S
Humidity72%
Visibility—
Dew point42°
Fri, 0653° / 48°0.23
53 °
Hartline, Friday, 6 November
Rain. High 53°, low 48°.
Pressure29.68 inHg
Wind15.5 mph SE
Humidity83%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Fri, 2041° / 30°0.08
41 °
Hartline, Friday, 20 November
Climate normal for this date — 60-year average.
Average high41°
Average low30°
Average precipitation0.08 in
Chance of precipitation40%
Record high51° (2002)
Record low12° (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.