As of 17:13 EDT

Weather in Mendham, NJ

70°Current weather

Mendham, Thursday, 8 October, 17:13

Partly cloudy. Feels like 69°. High 72°, low 52°.

Pressure29.88 inHg
Wind10.4 mph NW
Humidity44%
Visibility6.2 mi
Dew point46°

Monthly outlook for Mendham, NJ: average high 64°, average low 45.5°. That is 0.6° above the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 16 October (76.1°), the coolest 19 October (31.6°).

64°/45.5°
Average high / low
+0.6°
Above normal
2 / 5
Wet days / normal
0.3 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
8 October – 17 October67.2°63.9°+1.8°
18 October – 27 October58.7°60.4°-0.9°
28 October – 6 Novemberat normal57.1°—

October records over 66 years

88.7°2 October 2019All-time high
21.9°31 October 2011All-time low

Climate normals and records are computed from the nearest reference point — Morristown (6 mi).

Fri, 0971° / 45°0Clear
71 °Clear

Mendham, Friday, 9 October

Clear. High 71°, low 45°.

Pressure30.15 inHg
Wind11.2 mph W
Humidity41%
Visibility6.2 mi
Dew point41°
Sat, 1068° / 43°0Overcast
68 °Overcast

Mendham, Saturday, 10 October

Overcast. High 68°, low 43°.

Pressure30.47 inHg
Wind3.4 mph NE
Humidity37%
Visibility6.2 mi
Dew point38°
Sun, 1158° / 52°0.17Light rain
58 °Light rain

Mendham, Sunday, 11 October

Light rain. High 58°, low 52°.

Pressure30.33 inHg
Wind9.2 mph E
Humidity93%
Visibility3.4 mi
Dew point55°
Mon, 1269° / 55°0.03Light rain
69 °Light rain

Mendham, Monday, 12 October

Light rain. High 69°, low 55°.

Pressure29.77 inHg
Wind10.1 mph N
Humidity79%
Visibility6.2 mi
Dew point56°
Tue, 1375° / 54°0.11Light rain
75 °Light rain

Mendham, Tuesday, 13 October

Light rain. High 75°, low 54°.

Pressure29.77 inHg
Wind13.5 mph NW
Humidity85%
Visibility—
Dew point59°
Wed, 1459° / 47°0Clear
59 °Clear

Mendham, Wednesday, 14 October

Clear. High 59°, low 47°.

Pressure30.03 inHg
Wind13.8 mph N
Humidity54%
Visibility—
Dew point35°
Thu, 1561° / 44°0Mostly clear
61 °Mostly clear

Mendham, Thursday, 15 October

Mostly clear. High 61°, low 44°.

Pressure30.30 inHg
Wind7.2 mph SW
Humidity50%
Visibility—
Dew point37°
Fri, 1676° / 56°0.02Light rain
76 °Light rain

Mendham, Friday, 16 October

Light rain. High 76°, low 56°.

Pressure30.09 inHg
Wind10.2 mph W
Humidity81%
Visibility—
Dew point59°
Sat, 1763° / 42°0Partly cloudy
63 °Partly cloudy

Mendham, Saturday, 17 October

Partly cloudy. High 63°, low 42°.

Pressure30.06 inHg
Wind14.5 mph NW
Humidity52%
Visibility—
Dew point37°
Sun, 1848° / 35°0Clear
48 °Clear

Mendham, Sunday, 18 October

Clear. High 48°, low 35°.

Pressure30.39 inHg
Wind13.8 mph NW
Humidity36%
Visibility—
Dew point17°
Mon, 1953° / 32°0Clear
53 °Clear

Mendham, Monday, 19 October

Clear. High 53°, low 32°.

Pressure30.62 inHg
Wind5.4 mph NW
Humidity35%
Visibility—
Dew point18°
Tue, 2061° / 37°0Clear
61 °Clear

Mendham, Tuesday, 20 October

Clear. High 61°, low 37°.

Pressure30.42 inHg
Wind5.8 mph NW
Humidity41%
Visibility—
Dew point29°
Wed, 2163° / 44°0Clear
63 °Clear

Mendham, Wednesday, 21 October

Clear. High 63°, low 44°.

Pressure30.39 inHg
Wind5.7 mph SE
Humidity50%
Visibility—
Dew point37°
Thu, 2263° / 44°0Mostly clear
63 °Mostly clear

Mendham, Thursday, 22 October

Mostly clear. High 63°, low 44°.

Pressure30.27 inHg
Wind8.1 mph SW
Humidity54%
Visibility—
Dew point39°
Fri, 2364° / 48°0Partly cloudy
64 °Partly cloudy

Mendham, Friday, 23 October

Partly cloudy. High 64°, low 48°.

Pressure30.12 inHg
Wind8.6 mph NW
Humidity60%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2460° / 45°0.13Climate normal
60 °Climate normal

Mendham, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high60°
Average low45°
Average precipitation0.13 in
Chance of precipitation30%
Record high78° (2001)
Record low28° (1969)
Sun, 2560° / 46°0.11Climate normal
60 °Climate normal

Mendham, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high60°
Average low46°
Average precipitation0.11 in
Chance of precipitation33%
Record high76° (1963)
Record low33° (1962)
Mon, 2659° / 45°0.18Climate normal
59 °Climate normal

Mendham, Monday, 26 October

Climate normal for this date — 60-year average.

Average high59°
Average low45°
Average precipitation0.18 in
Chance of precipitation37%
Record high77° (1963)
Record low34° (1962)
Tue, 2759° / 45°0.18Climate normal
59 °Climate normal

Mendham, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high59°
Average low45°
Average precipitation0.18 in
Chance of precipitation30%
Record high80° (1963)
Record low30° (1976)
Wed, 2858° / 44°0.16Climate normal
58 °Climate normal

Mendham, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high58°
Average low44°
Average precipitation0.16 in
Chance of precipitation32%
Record high78° (2023)
Record low29° (1976)
Thu, 2957° / 42°0.23Climate normal
57 °Climate normal

Mendham, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high57°
Average low42°
Average precipitation0.23 in
Chance of precipitation28%
Record high73° (1984)
Record low30° (1965)
Fri, 3057° / 42°0.11Climate normal
57 °Climate normal

Mendham, Friday, 30 October

Climate normal for this date — 60-year average.

Average high57°
Average low42°
Average precipitation0.11 in
Chance of precipitation25%
Record high77° (2024)
Record low32° (2011)
Sat, 3157° / 42°0.06Climate normal
57 °Climate normal

Mendham, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high57°
Average low42°
Average precipitation0.06 in
Chance of precipitation17%
Record high80° (2024)
Record low22° (2011)
Sun, 0158° / 44°0.09Climate normal
58 °Climate normal

Mendham, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high58°
Average low44°
Average precipitation0.09 in
Chance of precipitation27%
Record high76° (2024)
Record low33° (1983)
Mon, 0258° / 44°0.11Climate normal
58 °Climate normal

Mendham, Monday, 2 November

Climate normal for this date — 60-year average.

Average high58°
Average low44°
Average precipitation0.11 in
Chance of precipitation32%
Record high75° (1982)
Record low30° (2002)
Tue, 0358° / 43°0.09Climate normal
58 °Climate normal

Mendham, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high58°
Average low43°
Average precipitation0.09 in
Chance of precipitation22%
Record high76° (2003)
Record low31° (2002)
Wed, 0456° / 42°0.06Climate normal
56 °Climate normal

Mendham, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high56°
Average low42°
Average precipitation0.06 in
Chance of precipitation22%
Record high72° (1987)
Record low31° (2006)
Thu, 0556° / 42°0.14Climate normal
56 °Climate normal

Mendham, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high56°
Average low42°
Average precipitation0.14 in
Chance of precipitation28%
Record high74° (2022)
Record low31° (1983)
Fri, 0655° / 42°0.08Climate normal
55 °Climate normal

Mendham, Friday, 6 November

Climate normal for this date — 60-year average.

Average high55°
Average low42°
Average precipitation0.08 in
Chance of precipitation32%
Record high78° (2024)
Record low28° (2012)

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 Mendham, NJ 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 Mendham, NJ 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.