Monthly outlook for Old Mystic, CT: average high 48.8°, average low 35.1°. That is 0.4° below the climate normal for November. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 19 November (59.8°), the coolest 25 November (25.7°).
48.8°/35.1°
Average high / low
−0.4°
Below normal
0 / 5
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 November – 23 November
51.9°
50°
+1.1°
24 November – 3 December
43.7°
48°
-2.4°
4 December – 13 December
at normal
43.7°
—
November records over 66 years
74.3°1 November 2024All-time high
15.1°22 November 2018All-time low
Climate normals and records are computed from the nearest reference point — Fishers Island (8 mi).
Sun, 1544° / 36°0
44 °
Old Mystic, Sunday, 15 November
Overcast. High 44°, low 36°.
Pressure30.03 inHg
Wind11.7 mph NW
Humidity56%
Visibility6.2 mi
Dew point28°
Mon, 1648° / 33°0
48 °
Old Mystic, Monday, 16 November
Mostly clear. High 48°, low 33°.
Pressure30.33 inHg
Wind8.5 mph NW
Humidity53%
Visibility6.2 mi
Dew point31°
Tue, 1752° / 30°0
52 °
Old Mystic, Tuesday, 17 November
Clear. High 52°, low 30°.
Pressure30.42 inHg
Wind5.4 mph NW
Humidity54%
Visibility6.2 mi
Dew point35°
Wed, 1858° / 38°0
58 °
Old Mystic, Wednesday, 18 November
Partly cloudy. High 58°, low 38°.
Pressure30.36 inHg
Wind6.6 mph W
Humidity46%
Visibility5.8 mi
Dew point36°
Thu, 1960° / 38°0
60 °
Old Mystic, Thursday, 19 November
Partly cloudy. High 60°, low 38°.
Pressure30.36 inHg
Wind7.2 mph W
Humidity47%
Visibility—
Dew point32°
Fri, 2056° / 40°0
56 °
Old Mystic, Friday, 20 November
Clear. High 56°, low 40°.
Pressure30.18 inHg
Wind8.2 mph W
Humidity58%
Visibility—
Dew point34°
Sat, 2156° / 45°0
56 °
Old Mystic, Saturday, 21 November
Clear. High 56°, low 45°.
Pressure30.30 inHg
Wind6.7 mph NW
Humidity67%
Visibility—
Dew point42°
Sun, 2257° / 47°0
57 °
Old Mystic, Sunday, 22 November
Partly cloudy. High 57°, low 47°.
Pressure30.06 inHg
Wind12.1 mph W
Humidity79%
Visibility—
Dew point48°
Mon, 2345° / 32°0
45 °
Old Mystic, Monday, 23 November
Mostly clear. High 45°, low 32°.
Pressure30.06 inHg
Wind15.7 mph NW
Humidity53%
Visibility—
Dew point25°
Tue, 2436° / 26°0
36 °
Old Mystic, Tuesday, 24 November
Clear. High 36°, low 26°.
Pressure30.50 inHg
Wind15.3 mph NW
Humidity32%
Visibility—
Dew point4°
Wed, 2538° / 26°0
38 °
Old Mystic, Wednesday, 25 November
Clear. High 38°, low 26°.
Pressure30.71 inHg
Wind5.6 mph N
Humidity32%
Visibility—
Dew point6°
Thu, 2648° / 34°0
48 °
Old Mystic, Thursday, 26 November
Overcast. High 48°, low 34°.
Pressure30.56 inHg
Wind7.6 mph W
Humidity67%
Visibility—
Dew point32°
Fri, 2746° / 32°0
46 °
Old Mystic, Friday, 27 November
Clear. High 46°, low 32°.
Pressure30.47 inHg
Wind10.3 mph NW
Humidity45%
Visibility—
Dew point20°
Sat, 2847° / 35°0
47 °
Old Mystic, Saturday, 28 November
Clear. High 47°, low 35°.
Pressure30.24 inHg
Wind10.3 mph NW
Humidity62%
Visibility—
Dew point29°
Sun, 2948° / 34°0
48 °
Old Mystic, Sunday, 29 November
Mostly clear. High 48°, low 34°.
Pressure30.36 inHg
Wind7.2 mph W
Humidity59%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 3047° / 36°0.14
47 °
Old Mystic, Monday, 30 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.14 in
Chance of precipitation33%
Record high62° (2020)
Record low23° (2013)
Tue, 0147° / 36°0.13
47 °
Old Mystic, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.13 in
Chance of precipitation42%
Record high65° (2001)
Record low20° (1989)
Wed, 0246° / 35°0.14
46 °
Old Mystic, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.14 in
Chance of precipitation28%
Record high61° (2006)
Record low16° (1989)
Thu, 0346° / 34°0.17
46 °
Old Mystic, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.17 in
Chance of precipitation28%
Record high62° (2009)
Record low14° (1976)
Fri, 0445° / 33°0.11
45 °
Old Mystic, Friday, 4 December
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.11 in
Chance of precipitation28%
Record high66° (1998)
Record low13° (1989)
Sat, 0544° / 33°0.18
44 °
Old Mystic, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.18 in
Chance of precipitation28%
Record high65° (2001)
Record low15° (2025)
Sun, 0645° / 34°0.17
45 °
Old Mystic, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.17 in
Chance of precipitation45%
Record high64° (2001)
Record low21° (2007)
Mon, 0744° / 33°0.14
44 °
Old Mystic, Monday, 7 December
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.14 in
Chance of precipitation30%
Record high69° (1998)
Record low13° (1964)
Tue, 0842° / 31°0.1
42 °
Old Mystic, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.1 in
Chance of precipitation28%
Record high58° (2011)
Record low17° (1970)
Wed, 0944° / 31°0.2
44 °
Old Mystic, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.2 in
Chance of precipitation35%
Record high60° (1991)
Record low12° (1968)
Thu, 1044° / 33°0.13
44 °
Old Mystic, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.13 in
Chance of precipitation37%
Record high58° (2023)
Record low8° (1968)
Fri, 1144° / 32°0.26
44 °
Old Mystic, Friday, 11 December
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.26 in
Chance of precipitation40%
Record high61° (1971)
Record low10° (1977)
Sat, 1243° / 31°0.19
43 °
Old Mystic, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.19 in
Chance of precipitation38%
Record high60° (2021)
Record low7° (1988)
Sun, 1343° / 31°0.09
43 °
Old Mystic, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.09 in
Chance of precipitation27%
Record high58° (1983)
Record low10° (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 Old Mystic, 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 Mystic, 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.