As of 15:48 EDT

Weather in Mill Valley, MA

50°

Mill Valley, Saturday, 17 October, 15:48

Mostly clear. Feels like 45°. High 56°, low 36°.

Pressure30.21 inHg

Wind11.5 mph N

Humidity53%

Visibility6.2 mi

Dew point33°

See detailed hourly forecast

Monthly outlook for Mill Valley, MA: average high 61.9°, average low 40.7°. That is 2.6° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 4 days and 2.0 inches. The warmest day looks like 1 November (69.7°), the coolest 19 October (30.3°).

61.9°/40.7°

Average high / low

+2.6°

Above normal

0 / 4

Wet days / normal

0.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
17 October – 26 October	59.6°	58.4°	+0.7°
27 October – 5 November	65.7°	55.1°	+5.9°
6 November – 15 November	at normal	50.2°	—

October records over 66 years

85.6°6 October 2007All-time high

22.3°31 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Granby (7 mi).

Sun, 1855° / 32°

55 °

Mill Valley, Sunday, 18 October

Clear. High 55°, low 32°.

Pressure30.56 inHg

Wind3.1 mph SE

Humidity47%

Visibility6.2 mi

Dew point28°

Mon, 1961° / 30°

61 °

Mill Valley, Monday, 19 October

Overcast. High 61°, low 30°.

Pressure30.42 inHg

Wind2.8 mph N

Humidity50%

Visibility6.2 mi

Dew point37°

Tue, 2063° / 41°

63 °

Mill Valley, Tuesday, 20 October

Clear. High 63°, low 41°.

Pressure30.27 inHg

Wind11.2 mph N

Humidity48%

Visibility6.2 mi

Dew point40°

Wed, 2156° / 38°

56 °

Mill Valley, Wednesday, 21 October

Clear. High 56°, low 38°.

Pressure30.33 inHg

Wind8.2 mph N

Humidity54%

Visibility6.2 mi

Dew point36°

Thu, 2261° / 34°

61 °

Mill Valley, Thursday, 22 October

Clear. High 61°, low 34°.

Pressure30.12 inHg

Wind9.5 mph N

Humidity55%

Visibility—

Dew point34°

Fri, 2360° / 41°

60 °

Mill Valley, Friday, 23 October

Clear. High 60°, low 41°.

Pressure30.21 inHg

Wind10.2 mph N

Humidity49%

Visibility—

Dew point34°

Sat, 2460° / 38°

60 °

Mill Valley, Saturday, 24 October

Clear. High 60°, low 38°.

Pressure30.50 inHg

Wind4.1 mph N

Humidity47%

Visibility—

Dew point32°

Sun, 2560° / 38°

60 °

Mill Valley, Sunday, 25 October

Clear. High 60°, low 38°.

Pressure30.45 inHg

Wind2.5 mph SW

Humidity60%

Visibility—

Dew point38°

Mon, 2665° / 39°

65 °

Mill Valley, Monday, 26 October

Overcast. High 65°, low 39°.

Pressure30.12 inHg

Wind4.8 mph SW

Humidity63%

Visibility—

Dew point40°

Tue, 2762° / 48°

62 °

Mill Valley, Tuesday, 27 October

Clear. High 62°, low 48°.

Pressure30.24 inHg

Wind7.4 mph NE

Humidity65%

Visibility—

Dew point48°

Wed, 2864° / 48°

64 °

Mill Valley, Wednesday, 28 October

Overcast. High 64°, low 48°.

Pressure30.36 inHg

Wind6.6 mph S

Humidity70%

Visibility—

Dew point47°

Thu, 2968° / 50°

68 °

Mill Valley, Thursday, 29 October

Overcast. High 68°, low 50°.

Pressure30.09 inHg

Wind10.1 mph SW

Humidity74%

Visibility—

Dew point53°

Fri, 3066° / 46°

66 °

Mill Valley, Friday, 30 October

Clear. High 66°, low 46°.

Pressure30.27 inHg

Wind4.6 mph E

Humidity48%

Visibility—

Dew point40°

Sat, 3165° / 44°

65 °

Mill Valley, Saturday, 31 October

Overcast. High 65°, low 44°.

Pressure30.21 inHg

Wind8.6 mph S

Humidity60%

Visibility—

Dew point42°

Sun, 0170° / 48°

70 °

Mill Valley, Sunday, 1 November

Overcast. High 70°, low 48°.

Pressure29.97 inHg

Wind8.9 mph W

Humidity78%

Visibility—

Dew point57°

From day 17 onward the outlook is built from 60-year climate statistics

Mon, 0256° / 40°

0.09

56 °

Mill Valley, Monday, 2 November

Climate normal for this date — 60-year average.

Average high56°

Average low40°

Average precipitation0.09 in

Chance of precipitation28%

Record high75° (1982)

Record low27° (1965)

Tue, 0356° / 40°

0.13

56 °

Mill Valley, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high56°

Average low40°

Average precipitation0.13 in

Chance of precipitation37%

Record high71° (2017)

Record low28° (1980)

Wed, 0454° / 39°

0.05

54 °

Mill Valley, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high54°

Average low39°

Average precipitation0.05 in

Chance of precipitation25%

Record high72° (1987)

Record low28° (2020)

Thu, 0554° / 39°

0.13

54 °

Mill Valley, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high54°

Average low39°

Average precipitation0.13 in

Chance of precipitation33%

Record high74° (2022)

Record low26° (2002)

Fri, 0652° / 39°

0.13

52 °

Mill Valley, Friday, 6 November

Climate normal for this date — 60-year average.

Average high52°

Average low39°

Average precipitation0.13 in

Chance of precipitation38%

Record high76° (2024)

Record low28° (2012)

Sat, 0752° / 38°

0.07

52 °

Mill Valley, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high52°

Average low38°

Average precipitation0.07 in

Chance of precipitation23%

Record high71° (2020)

Record low26° (1962)

Sun, 0851° / 37°

0.12

51 °

Mill Valley, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high51°

Average low37°

Average precipitation0.12 in

Chance of precipitation32%

Record high70° (2020)

Record low26° (2019)

Mon, 0951° / 37°

0.09

51 °

Mill Valley, Monday, 9 November

Climate normal for this date — 60-year average.

Average high51°

Average low37°

Average precipitation0.09 in

Chance of precipitation30%

Record high70° (1975)

Record low23° (2019)

Tue, 1052° / 37°

0.14

52 °

Mill Valley, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high52°

Average low37°

Average precipitation0.14 in

Chance of precipitation37%

Record high72° (2020)

Record low23° (2017)

Wed, 1150° / 37°

0.15

50 °

Mill Valley, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high50°

Average low37°

Average precipitation0.15 in

Chance of precipitation38%

Record high67° (2020)

Record low20° (2017)

Thu, 1249° / 36°

0.15

49 °

Mill Valley, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high49°

Average low36°

Average precipitation0.15 in

Chance of precipitation37%

Record high67° (2022)

Record low22° (2019)

Fri, 1347° / 34°

0.17

47 °

Mill Valley, Friday, 13 November

Climate normal for this date — 60-year average.

Average high47°

Average low34°

Average precipitation0.17 in

Chance of precipitation42%

Record high68° (1964)

Record low16° (2019)

Sat, 1448° / 34°

0.12

48 °

Mill Valley, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high48°

Average low34°

Average precipitation0.12 in

Chance of precipitation25%

Record high66° (1993)

Record low14° (1986)

Sun, 1549° / 34°

0.11

49 °

Mill Valley, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high49°

Average low34°

Average precipitation0.11 in

Chance of precipitation47%

Record high72° (1993)

Record low20° (1967)

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 Mill Valley, MA 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 Mill Valley, MA 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.