Monthly outlook for Mountain Top, WA: average high 52.9°, average low 37.7°. That is 2.2° below the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 6 days and 1.3 inches. The warmest day looks like 21 October (59.3°), the coolest 20 October (29.3°).
52.9°/37.7°
Average high / low
−2.2°
Below normal
3 / 6
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
54.4°
58.6°
-2.4°
30 October – 8 November
50.5°
53.5°
-1.7°
9 November – 18 November
at normal
49.8°
—
October records over 66 years
89.6°2 October 1975All-time high
20.3°30 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Dayton (11 mi).
Wed, 2159° / 32°0
59 °
Mountain Top, Wednesday, 21 October
Overcast. High 59°, low 32°.
Pressure29.97 inHg
Wind3.6 mph NW
Humidity36%
Visibility6.2 mi
Dew point34°
Thu, 2259° / 46°0
59 °
Mountain Top, Thursday, 22 October
Light rain. High 59°, low 46°.
Pressure29.88 inHg
Wind4.3 mph W
Humidity50%
Visibility6.2 mi
Dew point40°
Fri, 2348° / 34°0
48 °
Mountain Top, Friday, 23 October
Clear. High 48°, low 34°.
Pressure30.24 inHg
Wind9.2 mph W
Humidity51%
Visibility6.2 mi
Dew point24°
Sat, 2454° / 30°0
54 °
Mountain Top, Saturday, 24 October
Overcast. High 54°, low 30°.
Pressure30.24 inHg
Wind4.6 mph NW
Humidity40%
Visibility—
Dew point26°
Sun, 2557° / 39°0
57 °
Mountain Top, Sunday, 25 October
Clear. High 57°, low 39°.
Pressure30.21 inHg
Wind4.5 mph NW
Humidity34%
Visibility—
Dew point26°
Mon, 2649° / 34°0
49 °
Mountain Top, Monday, 26 October
Clear. High 49°, low 34°.
Pressure30.33 inHg
Wind6.4 mph NW
Humidity29%
Visibility—
Dew point14°
Tue, 2753° / 36°0
53 °
Mountain Top, Tuesday, 27 October
Partly cloudy. High 53°, low 36°.
Pressure30.24 inHg
Wind5.9 mph SE
Humidity27%
Visibility—
Dew point17°
Wed, 2854° / 39°0
54 °
Mountain Top, Wednesday, 28 October
Mostly clear. High 54°, low 39°.
Pressure30.09 inHg
Wind5.6 mph N
Humidity28%
Visibility—
Dew point19°
Thu, 2955° / 40°0
55 °
Mountain Top, Thursday, 29 October
Overcast. High 55°, low 40°.
Pressure29.97 inHg
Wind4.8 mph SE
Humidity31%
Visibility—
Dew point22°
Fri, 3054° / 42°0
54 °
Mountain Top, Friday, 30 October
Clear. High 54°, low 42°.
Pressure30.00 inHg
Wind5.7 mph NW
Humidity33%
Visibility—
Dew point23°
Sat, 3158° / 43°0
58 °
Mountain Top, Saturday, 31 October
Overcast. High 58°, low 43°.
Pressure29.97 inHg
Wind6.8 mph SE
Humidity34%
Visibility—
Dew point26°
Sun, 0153° / 43°0.07
53 °
Mountain Top, Sunday, 1 November
Light rain. High 53°, low 43°.
Pressure29.74 inHg
Wind8.1 mph SE
Humidity46%
Visibility—
Dew point32°
Mon, 0244° / 42°0.27
44 °
Mountain Top, Monday, 2 November
Light rain. High 44°, low 42°.
Pressure29.85 inHg
Wind6.6 mph SW
Humidity86%
Visibility—
Dew point40°
Tue, 0343° / 38°0.13
43 °
Mountain Top, Tuesday, 3 November
Light rain. High 43°, low 38°.
Pressure30.09 inHg
Wind8.5 mph SW
Humidity89%
Visibility—
Dew point39°
Wed, 0450° / 36°0.01
50 °
Mountain Top, Wednesday, 4 November
Light rain. High 50°, low 36°.
Pressure30.12 inHg
Wind8.9 mph S
Humidity58%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0553° / 39°0.1
53 °
Mountain Top, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.1 in
Chance of precipitation42%
Record high69° (1975)
Record low20° (1973)
Fri, 0653° / 38°0.11
53 °
Mountain Top, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.11 in
Chance of precipitation47%
Record high69° (2014)
Record low22° (2003)
Sat, 0753° / 38°0.13
53 °
Mountain Top, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.13 in
Chance of precipitation42%
Record high68° (1978)
Record low24° (2003)
Sun, 0852° / 38°0.09
52 °
Mountain Top, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.09 in
Chance of precipitation37%
Record high67° (2016)
Record low26° (1966)
Mon, 0951° / 37°0.07
51 °
Mountain Top, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.07 in
Chance of precipitation43%
Record high64° (2016)
Record low23° (1986)
Tue, 1050° / 37°0.07
50 °
Mountain Top, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.07 in
Chance of precipitation38%
Record high66° (1989)
Record low13° (1986)
Wed, 1151° / 37°0.08
51 °
Mountain Top, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.08 in
Chance of precipitation38%
Record high69° (1990)
Record low11° (2000)
Thu, 1251° / 37°0.11
51 °
Mountain Top, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.11 in
Chance of precipitation37%
Record high74° (1999)
Record low10° (2000)
Fri, 1350° / 37°0.1
50 °
Mountain Top, Friday, 13 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.1 in
Chance of precipitation52%
Record high71° (1999)
Record low9° (2000)
Sat, 1449° / 37°0.05
49 °
Mountain Top, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.05 in
Chance of precipitation30%
Record high68° (1999)
Record low17° (2000)
Sun, 1551° / 36°0.06
51 °
Mountain Top, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.06 in
Chance of precipitation40%
Record high68° (2021)
Record low13° (1964)
Mon, 1649° / 36°0.1
49 °
Mountain Top, Monday, 16 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.1 in
Chance of precipitation53%
Record high65° (1999)
Record low11° (1964)
Tue, 1749° / 37°0.11
49 °
Mountain Top, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.11 in
Chance of precipitation48%
Record high65° (1976)
Record low14° (2000)
Wed, 1848° / 35°0.09
48 °
Mountain Top, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation45%
Record high62° (1965)
Record low16° (2000)
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 Mountain Top, 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 Mountain Top, 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.