Monthly outlook for Grove Beach, CT: average high 58.4°, average low 43.8°. That is 0.4° below the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 4 days and 2.2 inches. The warmest day looks like 16 October (70.9°), the coolest 18 October (35°).
58.4°/43.8°
Average high / low
−0.4°
Below normal
3 / 4
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
60.4°
60°
+0.2°
25 October – 3 November
55°
57.3°
-1.3°
4 November – 13 November
at normal
53.6°
—
October records over 66 years
80.6°2 October 2019All-time high
29.1°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Old Lyme (10 mi).
Fri, 1671° / 48°0.36
71 °
Grove Beach, Friday, 16 October
Rain. High 71°, low 48°.
Pressure29.83 inHg
Wind11.9 mph S
Humidity92%
Visibility2.5 mi
Dew point62°
Sat, 1765° / 41°0.07
65 °
Grove Beach, Saturday, 17 October
Light rain. High 65°, low 41°.
Pressure30.06 inHg
Wind13.7 mph NW
Humidity49%
Visibility6.2 mi
Dew point33°
Sun, 1852° / 35°0
52 °
Grove Beach, Sunday, 18 October
Clear. High 52°, low 35°.
Pressure30.59 inHg
Wind6.2 mph N
Humidity48%
Visibility6.2 mi
Dew point25°
Mon, 1960° / 39°0
60 °
Grove Beach, Monday, 19 October
Clear. High 60°, low 39°.
Pressure30.53 inHg
Wind9.4 mph NE
Humidity48%
Visibility—
Dew point32°
Tue, 2063° / 43°0
63 °
Grove Beach, Tuesday, 20 October
Overcast. High 63°, low 43°.
Pressure30.18 inHg
Wind11.8 mph N
Humidity47%
Visibility—
Dew point34°
Wed, 2160° / 48°0
60 °
Grove Beach, Wednesday, 21 October
Clear. High 60°, low 48°.
Pressure30.30 inHg
Wind15.7 mph N
Humidity59%
Visibility—
Dew point42°
Thu, 2254° / 43°0
54 °
Grove Beach, Thursday, 22 October
Clear. High 54°, low 43°.
Pressure30.42 inHg
Wind10.5 mph NE
Humidity55%
Visibility—
Dew point34°
Fri, 2364° / 48°0
64 °
Grove Beach, Friday, 23 October
Clear. High 64°, low 48°.
Pressure30.27 inHg
Wind11.3 mph NW
Humidity53%
Visibility—
Dew point39°
Sat, 2454° / 44°0
54 °
Grove Beach, Saturday, 24 October
Clear. High 54°, low 44°.
Pressure30.47 inHg
Wind14.7 mph E
Humidity51%
Visibility—
Dew point32°
Sun, 2552° / 40°0
52 °
Grove Beach, Sunday, 25 October
Overcast. High 52°, low 40°.
Pressure30.53 inHg
Wind10.7 mph NE
Humidity60%
Visibility—
Dew point34°
Mon, 2657° / 45°0
57 °
Grove Beach, Monday, 26 October
Overcast. High 57°, low 45°.
Pressure30.21 inHg
Wind13 mph W
Humidity60%
Visibility—
Dew point38°
Tue, 2755° / 45°0
55 °
Grove Beach, Tuesday, 27 October
Overcast. High 55°, low 45°.
Pressure30.12 inHg
Wind11.8 mph W
Humidity57%
Visibility—
Dew point36°
Wed, 2854° / 43°0
54 °
Grove Beach, Wednesday, 28 October
Clear. High 54°, low 43°.
Pressure30.09 inHg
Wind15.7 mph W
Humidity47%
Visibility—
Dew point30°
Thu, 2957° / 43°0
57 °
Grove Beach, Thursday, 29 October
Overcast. High 57°, low 43°.
Pressure30.12 inHg
Wind18.6 mph SW
Humidity52%
Visibility—
Dew point33°
Fri, 3055° / 46°0.07
55 °
Grove Beach, Friday, 30 October
Light rain. High 55°, low 46°.
Pressure29.88 inHg
Wind23.4 mph W
Humidity70%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3156° / 46°0.07
56 °
Grove Beach, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high56°
Average low46°
Average precipitation0.07 in
Chance of precipitation23%
Record high72° (2024)
Record low29° (2020)
Sun, 0158° / 47°0.12
58 °
Grove Beach, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high58°
Average low47°
Average precipitation0.12 in
Chance of precipitation28%
Record high74° (2024)
Record low37° (2010)
Mon, 0257° / 47°0.08
57 °
Grove Beach, Monday, 2 November
Climate normal for this date — 60-year average.
Average high57°
Average low47°
Average precipitation0.08 in
Chance of precipitation30%
Record high69° (2022)
Record low31° (1965)
Tue, 0357° / 46°0.16
57 °
Grove Beach, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high57°
Average low46°
Average precipitation0.16 in
Chance of precipitation30%
Record high69° (2017)
Record low35° (1980)
Wed, 0456° / 46°0.04
56 °
Grove Beach, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high56°
Average low46°
Average precipitation0.04 in
Chance of precipitation27%
Record high68° (1975)
Record low34° (2013)
Thu, 0556° / 46°0.15
56 °
Grove Beach, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low46°
Average precipitation0.15 in
Chance of precipitation40%
Record high70° (2022)
Record low34° (1965)
Fri, 0655° / 45°0.11
55 °
Grove Beach, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low45°
Average precipitation0.11 in
Chance of precipitation35%
Record high71° (2024)
Record low33° (2012)
Sat, 0755° / 44°0.07
55 °
Grove Beach, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.07 in
Chance of precipitation25%
Record high72° (2022)
Record low32° (1962)
Sun, 0853° / 43°0.13
53 °
Grove Beach, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high53°
Average low43°
Average precipitation0.13 in
Chance of precipitation32%
Record high71° (2020)
Record low30° (2019)
Mon, 0953° / 43°0.09
53 °
Grove Beach, Monday, 9 November
Climate normal for this date — 60-year average.
Average high53°
Average low43°
Average precipitation0.09 in
Chance of precipitation22%
Record high67° (1975)
Record low26° (2019)
Tue, 1054° / 43°0.18
54 °
Grove Beach, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high54°
Average low43°
Average precipitation0.18 in
Chance of precipitation40%
Record high65° (1999)
Record low27° (2017)
Wed, 1153° / 43°0.16
53 °
Grove Beach, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high53°
Average low43°
Average precipitation0.16 in
Chance of precipitation35%
Record high67° (2022)
Record low23° (2017)
Thu, 1252° / 41°0.16
52 °
Grove Beach, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.16 in
Chance of precipitation38%
Record high71° (2022)
Record low28° (2019)
Fri, 1351° / 40°0.21
51 °
Grove Beach, Friday, 13 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.21 in
Chance of precipitation40%
Record high65° (1964)
Record low22° (2019)
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 Grove Beach, CT 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 Grove Beach, CT 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.