Monthly outlook for Somerville, NJ: average high 63.1°, average low 46.1°. That is 0.2° below the climate normal for October. Precipitation is expected on 5 days (about 2.6 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (75.3°), the coolest 19 October (33.4°).
63.1°/46.1°
Average high / low
−0.2°
Below normal
5 / 4
Wet days / normal
2.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
64.7°
64.4°
+0.2°
20 October – 29 October
60.4°
61°
-0.3°
30 October – 8 November
at normal
57.9°
—
October records over 66 years
92.8°2 October 2019All-time high
26.8°31 October 2011All-time low
Climate normals and records are computed from the nearest reference point — Bound Brook (4 mi).
Sun, 1162° / 50°1.6
62 °
Somerville, Sunday, 11 October
Heavy rain. High 62°, low 50°.
Pressure30.27 inHg
Wind10.8 mph E
Humidity97%
Visibility1.3 mi
Dew point58°
Mon, 1273° / 53°0.22
73 °
Somerville, Monday, 12 October
Rain. High 73°, low 53°.
Pressure29.77 inHg
Wind12.7 mph N
Humidity81%
Visibility6.2 mi
Dew point59°
Tue, 1375° / 53°0
75 °
Somerville, Tuesday, 13 October
Mostly clear. High 75°, low 53°.
Pressure29.91 inHg
Wind5.7 mph SW
Humidity72%
Visibility6.2 mi
Dew point63°
Wed, 1474° / 60°0
74 °
Somerville, Wednesday, 14 October
Mostly clear. High 74°, low 60°.
Pressure29.85 inHg
Wind11.1 mph NW
Humidity65%
Visibility6.2 mi
Dew point61°
Thu, 1561° / 49°0
61 °
Somerville, Thursday, 15 October
Clear. High 61°, low 49°.
Pressure30.27 inHg
Wind10.5 mph N
Humidity47%
Visibility—
Dew point37°
Fri, 1666° / 47°0.62
66 °
Somerville, Friday, 16 October
Rain. High 66°, low 47°.
Pressure30.03 inHg
Wind11.4 mph SW
Humidity97%
Visibility—
Dew point50°
Sat, 1760° / 46°0.09
60 °
Somerville, Saturday, 17 October
Light rain. High 60°, low 46°.
Pressure29.85 inHg
Wind11.4 mph W
Humidity56%
Visibility—
Dew point38°
Sun, 1851° / 36°0
51 °
Somerville, Sunday, 18 October
Clear. High 51°, low 36°.
Pressure30.12 inHg
Wind13.3 mph NW
Humidity48%
Visibility—
Dew point28°
Mon, 1953° / 33°0
53 °
Somerville, Monday, 19 October
Clear. High 53°, low 33°.
Pressure30.47 inHg
Wind10.3 mph NW
Humidity36%
Visibility—
Dew point20°
Tue, 2058° / 38°0
58 °
Somerville, Tuesday, 20 October
Clear. High 58°, low 38°.
Pressure30.59 inHg
Wind3.6 mph NW
Humidity39%
Visibility—
Dew point26°
Wed, 2160° / 41°0
60 °
Somerville, Wednesday, 21 October
Overcast. High 60°, low 41°.
Pressure30.53 inHg
Wind7.5 mph SE
Humidity47%
Visibility—
Dew point33°
Thu, 2263° / 53°0.09
63 °
Somerville, Thursday, 22 October
Light rain. High 63°, low 53°.
Pressure30.24 inHg
Wind5.3 mph SE
Humidity80%
Visibility—
Dew point52°
Fri, 2366° / 49°0
66 °
Somerville, Friday, 23 October
Partly cloudy. High 66°, low 49°.
Pressure30.06 inHg
Wind11.3 mph SW
Humidity68%
Visibility—
Dew point47°
Sat, 2459° / 44°0
59 °
Somerville, Saturday, 24 October
Clear. High 59°, low 44°.
Pressure30.06 inHg
Wind12.3 mph W
Humidity55%
Visibility—
Dew point37°
Sun, 2557° / 40°0
57 °
Somerville, Sunday, 25 October
Partly cloudy. High 57°, low 40°.
Pressure30.15 inHg
Wind5.2 mph W
Humidity49%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2660° / 47°0.16
60 °
Somerville, Monday, 26 October
Climate normal for this date — 60-year average.
Average high60°
Average low47°
Average precipitation0.16 in
Chance of precipitation32%
Record high79° (2023)
Record low33° (2018)
Tue, 2760° / 46°0.16
60 °
Somerville, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.16 in
Chance of precipitation28%
Record high81° (1963)
Record low32° (1976)
Wed, 2860° / 45°0.14
60 °
Somerville, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.14 in
Chance of precipitation28%
Record high80° (2023)
Record low30° (1976)
Thu, 2958° / 44°0.22
58 °
Somerville, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.22 in
Chance of precipitation28%
Record high75° (1984)
Record low31° (1965)
Fri, 3058° / 43°0.09
58 °
Somerville, Friday, 30 October
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.09 in
Chance of precipitation23%
Record high79° (2024)
Record low33° (2011)
Sat, 3159° / 44°0.05
59 °
Somerville, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.05 in
Chance of precipitation17%
Record high82° (2024)
Record low27° (2011)
Sun, 0160° / 45°0.09
60 °
Somerville, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.09 in
Chance of precipitation27%
Record high79° (2024)
Record low33° (1983)
Mon, 0260° / 46°0.09
60 °
Somerville, Monday, 2 November
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.09 in
Chance of precipitation33%
Record high76° (1982)
Record low31° (2002)
Tue, 0360° / 44°0.07
60 °
Somerville, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high60°
Average low44°
Average precipitation0.07 in
Chance of precipitation23%
Record high77° (2003)
Record low32° (2002)
Wed, 0458° / 43°0.07
58 °
Somerville, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.07 in
Chance of precipitation18%
Record high73° (1987)
Record low31° (2021)
Thu, 0558° / 43°0.12
58 °
Somerville, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.12 in
Chance of precipitation28%
Record high77° (2022)
Record low32° (1983)
Fri, 0656° / 43°0.08
56 °
Somerville, Friday, 6 November
Climate normal for this date — 60-year average.
Average high56°
Average low43°
Average precipitation0.08 in
Chance of precipitation32%
Record high80° (2024)
Record low31° (2012)
Sat, 0756° / 42°0.09
56 °
Somerville, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.09 in
Chance of precipitation22%
Record high75° (2022)
Record low29° (1962)
Sun, 0855° / 41°0.14
55 °
Somerville, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.14 in
Chance of precipitation27%
Record high74° (2020)
Record low28° (1960)
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 Somerville, 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 Somerville, 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.