Monthly outlook for Old Saybrook, CT: average high 59°, average low 45.3°. That is 1.7° above the climate normal for October. Precipitation is expected on 4 days (about 1.5 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 30 October (71.4°), the coolest 28 October (35.1°).
59°/45.3°
Average high / low
+1.7°
Above normal
4 / 5
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
26 October – 4 November
61.4°
56.9°
+2.5°
5 November – 14 November
55°
53°
+1.1°
15 November – 24 November
at normal
49.3°
—
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 (4 mi).
Tue, 2758° / 39°0
58 °
Old Saybrook, Tuesday, 27 October
Clear. High 58°, low 39°.
Pressure30.36 inHg
Wind6.1 mph N
Humidity46%
Visibility6.2 mi
Dew point34°
Wed, 2858° / 35°0
58 °
Old Saybrook, Wednesday, 28 October
Clear. High 58°, low 35°.
Pressure30.45 inHg
Wind4.5 mph SW
Humidity57%
Visibility6.2 mi
Dew point41°
Thu, 2963° / 47°0
63 °
Old Saybrook, Thursday, 29 October
Overcast. High 63°, low 47°.
Pressure30.27 inHg
Wind9.1 mph SW
Humidity68%
Visibility6.2 mi
Dew point51°
Fri, 3071° / 53°0
71 °
Old Saybrook, Friday, 30 October
Clear. High 71°, low 53°.
Pressure30.09 inHg
Wind9.8 mph NW
Humidity66%
Visibility—
Dew point52°
Sat, 3164° / 44°0
64 °
Old Saybrook, Saturday, 31 October
Overcast. High 64°, low 44°.
Pressure30.27 inHg
Wind7.9 mph NW
Humidity54%
Visibility—
Dew point42°
Sun, 0159° / 53°0
59 °
Old Saybrook, Sunday, 1 November
Overcast. High 59°, low 53°.
Pressure30.39 inHg
Wind11.2 mph SW
Humidity58%
Visibility—
Dew point42°
Mon, 0262° / 59°0.02
62 °
Old Saybrook, Monday, 2 November
Light rain. High 62°, low 59°.
Pressure30.15 inHg
Wind8.7 mph SW
Humidity77%
Visibility—
Dew point54°
Tue, 0358° / 47°0.08
58 °
Old Saybrook, Tuesday, 3 November
Light rain. High 58°, low 47°.
Pressure30.00 inHg
Wind21.9 mph NE
Humidity93%
Visibility—
Dew point55°
Wed, 0450° / 37°0
50 °
Old Saybrook, Wednesday, 4 November
Clear. High 50°, low 37°.
Pressure30.47 inHg
Wind20.6 mph NE
Humidity57%
Visibility—
Dew point30°
Thu, 0552° / 40°0
52 °
Old Saybrook, Thursday, 5 November
Overcast. High 52°, low 40°.
Pressure30.47 inHg
Wind16.8 mph E
Humidity68%
Visibility—
Dew point37°
Fri, 0653° / 45°0.59
53 °
Old Saybrook, Friday, 6 November
Rain. High 53°, low 45°.
Pressure30.09 inHg
Wind30.1 mph NE
Humidity72%
Visibility—
Dew point42°
Sat, 0758° / 48°0.16
58 °
Old Saybrook, Saturday, 7 November
Rain. High 58°, low 48°.
Pressure29.68 inHg
Wind26.9 mph NE
Humidity75%
Visibility—
Dew point45°
Sun, 0857° / 49°0.63
57 °
Old Saybrook, Sunday, 8 November
Rain. High 57°, low 49°.
Pressure29.65 inHg
Wind27.7 mph NW
Humidity94%
Visibility—
Dew point54°
Mon, 0953° / 46°0
53 °
Old Saybrook, Monday, 9 November
Mostly clear. High 53°, low 46°.
Pressure29.94 inHg
Wind22.5 mph NW
Humidity64%
Visibility—
Dew point38°
Tue, 1057° / 44°0
57 °
Old Saybrook, Tuesday, 10 November
Clear. High 57°, low 44°.
Pressure30.21 inHg
Wind11.5 mph N
Humidity69%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 1153° / 43°0.16
53 °
Old Saybrook, 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 °
Old Saybrook, 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 °
Old Saybrook, 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)
Sat, 1450° / 40°0.09
50 °
Old Saybrook, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.09 in
Chance of precipitation22%
Record high62° (1989)
Record low25° (1986)
Sun, 1551° / 40°0.13
51 °
Old Saybrook, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.13 in
Chance of precipitation42%
Record high67° (1993)
Record low24° (1967)
Mon, 1651° / 40°0.15
51 °
Old Saybrook, Monday, 16 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.15 in
Chance of precipitation35%
Record high64° (2001)
Record low23° (1967)
Tue, 1750° / 40°0.15
50 °
Old Saybrook, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.15 in
Chance of precipitation28%
Record high65° (2024)
Record low26° (2019)
Wed, 1850° / 40°0.08
50 °
Old Saybrook, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.08 in
Chance of precipitation23%
Record high63° (2024)
Record low27° (2020)
Thu, 1950° / 39°0.06
50 °
Old Saybrook, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.06 in
Chance of precipitation23%
Record high62° (2021)
Record low24° (1986)
Fri, 2049° / 39°0.13
49 °
Old Saybrook, Friday, 20 November
Climate normal for this date — 60-year average.
Average high49°
Average low39°
Average precipitation0.13 in
Chance of precipitation32%
Record high64° (1985)
Record low20° (1986)
Sat, 2149° / 38°0.11
49 °
Old Saybrook, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.11 in
Chance of precipitation30%
Record high60° (2020)
Record low20° (1987)
Sun, 2248° / 38°0.15
48 °
Old Saybrook, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.15 in
Chance of precipitation37%
Record high60° (1994)
Record low15° (2018)
Mon, 2347° / 37°0.13
47 °
Old Saybrook, Monday, 23 November
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.13 in
Chance of precipitation25%
Record high60° (1992)
Record low15° (2018)
Tue, 2448° / 38°0.1
48 °
Old Saybrook, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.1 in
Chance of precipitation30%
Record high62° (1979)
Record low19° (1989)
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 Old Saybrook, 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 Old Saybrook, 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.