Monthly outlook for Mountain Top, WA: average high 47.8°, average low 34°. That is 6.5° below the climate normal for October. Precipitation is expected on 5 days (about 0.9 inches), against a normal of 5 days and 1.1 inches. The warmest day looks like 16 October (64.2°), the coolest 26 October (26.5°).
47.8°/34°
Average high / low
−6.5°
Below normal
5 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
53.7°
61.3°
-4.2°
25 October – 3 November
37.9°
55.4°
-9.7°
4 November – 13 November
at normal
51.7°
—
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).
Fri, 1664° / 33°0
64 °
Mountain Top, Friday, 16 October
Partly cloudy. High 64°, low 33°.
Pressure30.27 inHg
Wind2.7 mph W
Humidity22%
Visibility6.2 mi
Dew point27°
Sat, 1763° / 46°0
63 °
Mountain Top, Saturday, 17 October
Overcast. High 63°, low 46°.
Pressure30.12 inHg
Wind14.8 mph W
Humidity40%
Visibility6.2 mi
Dew point38°
Sun, 1860° / 40°0
60 °
Mountain Top, Sunday, 18 October
Clear. High 60°, low 40°.
Pressure30.03 inHg
Wind6 mph N
Humidity51%
Visibility6.2 mi
Dew point40°
Mon, 1956° / 45°0
56 °
Mountain Top, Monday, 19 October
Partly cloudy. High 56°, low 45°.
Pressure29.88 inHg
Wind5.3 mph NW
Humidity39%
Visibility—
Dew point29°
Tue, 2058° / 44°0
58 °
Mountain Top, Tuesday, 20 October
Overcast. High 58°, low 44°.
Pressure30.00 inHg
Wind5.3 mph N
Humidity38%
Visibility—
Dew point29°
Wed, 2148° / 42°0.11
48 °
Mountain Top, Wednesday, 21 October
Light rain. High 48°, low 42°.
Pressure29.80 inHg
Wind5.5 mph S
Humidity73%
Visibility—
Dew point39°
Thu, 2246° / 33°0.02
46 °
Mountain Top, Thursday, 22 October
Light rain. High 46°, low 33°.
Pressure29.97 inHg
Wind15.8 mph SW
Humidity46%
Visibility—
Dew point25°
Fri, 2343° / 30°0
43 °
Mountain Top, Friday, 23 October
Clear. High 43°, low 30°.
Pressure30.27 inHg
Wind14.2 mph W
Humidity50%
Visibility—
Dew point21°
Sat, 2439° / 32°0.27
39 °
Mountain Top, Saturday, 24 October
Snow. High 39°, low 32°.
Pressure30.21 inHg
Wind6.9 mph S
Humidity80%
Visibility—
Dew point31°
Sun, 2538° / 29°0
38 °
Mountain Top, Sunday, 25 October
Overcast. High 38°, low 29°.
Pressure30.03 inHg
Wind6.7 mph N
Humidity76%
Visibility—
Dew point28°
Mon, 2640° / 26°0
40 °
Mountain Top, Monday, 26 October
Partly cloudy. High 40°, low 26°.
Pressure29.91 inHg
Wind7.4 mph N
Humidity62%
Visibility—
Dew point25°
Tue, 2741° / 30°0
41 °
Mountain Top, Tuesday, 27 October
Overcast. High 41°, low 30°.
Pressure29.80 inHg
Wind12.2 mph SW
Humidity41%
Visibility—
Dew point17°
Wed, 2837° / 30°0.41
37 °
Mountain Top, Wednesday, 28 October
Snow. High 37°, low 30°.
Pressure29.91 inHg
Wind18.5 mph SW
Humidity95%
Visibility—
Dew point31°
Thu, 2933° / 28°0.04
33 °
Mountain Top, Thursday, 29 October
Light snow. High 33°, low 28°.
Pressure30.06 inHg
Wind11.3 mph SW
Humidity79%
Visibility—
Dew point24°
Fri, 3038° / 28°0.06
38 °
Mountain Top, Friday, 30 October
Light snow. High 38°, low 28°.
Pressure30.18 inHg
Wind9.2 mph SE
Humidity71%
Visibility—
Dew point27°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3153° / 40°0.12
53 °
Mountain Top, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.12 in
Chance of precipitation43%
Record high72° (1988)
Record low20° (2002)
Sun, 0154° / 39°0.13
54 °
Mountain Top, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.13 in
Chance of precipitation38%
Record high75° (1965)
Record low20° (2002)
Mon, 0254° / 38°0.07
54 °
Mountain Top, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.07 in
Chance of precipitation33%
Record high67° (1981)
Record low15° (1991)
Tue, 0355° / 39°0.04
55 °
Mountain Top, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.04 in
Chance of precipitation18%
Record high69° (1975)
Record low18° (1973)
Wed, 0455° / 40°0.12
55 °
Mountain Top, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.12 in
Chance of precipitation47%
Record high72° (1975)
Record low25° (1973)
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)
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.