Monthly outlook for Bethlehem, CT: average high 57.8°, average low 40.6°. That is 0.7° below the climate normal for October. Precipitation is expected on 5 days (about 2.4 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 12 October (71.9°), the coolest 20 October (30.2°).
57.8°/40.6°
Average high / low
−0.7°
Below normal
5 / 5
Wet days / normal
2.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
59.8°
59.9°
-0°
20 October – 29 October
54.5°
56.8°
-1.3°
30 October – 8 November
at normal
53.4°
—
October records over 66 years
85.3°6 October 2007All-time high
21.9°31 October 2011All-time low
Climate normals and records are computed from the nearest reference point — Plymouth (10 mi).
Sun, 1159° / 40°0.67
59 °
Bethlehem, Sunday, 11 October
Heavy rain. High 59°, low 40°.
Pressure30.36 inHg
Wind7.9 mph SE
Humidity66%
Visibility6.2 mi
Dew point45°
Mon, 1272° / 45°0.39
72 °
Bethlehem, Monday, 12 October
Heavy rain. High 72°, low 45°.
Pressure29.77 inHg
Wind9 mph NE
Humidity74%
Visibility6.2 mi
Dew point56°
Tue, 1371° / 53°0
71 °
Bethlehem, Tuesday, 13 October
Light rain. High 71°, low 53°.
Pressure29.88 inHg
Wind7.4 mph S
Humidity70%
Visibility6.2 mi
Dew point59°
Wed, 1468° / 54°0.21
68 °
Bethlehem, Wednesday, 14 October
Rain. High 68°, low 54°.
Pressure29.80 inHg
Wind12.6 mph NW
Humidity67%
Visibility6.2 mi
Dew point57°
Thu, 1554° / 44°0
54 °
Bethlehem, Thursday, 15 October
Mostly clear. High 54°, low 44°.
Pressure30.24 inHg
Wind11.8 mph NW
Humidity54%
Visibility—
Dew point34°
Fri, 1662° / 39°0.85
62 °
Bethlehem, Friday, 16 October
Rain. High 62°, low 39°.
Pressure30.09 inHg
Wind14.2 mph S
Humidity83%
Visibility—
Dew point39°
Sat, 1757° / 41°0.22
57 °
Bethlehem, Saturday, 17 October
Rain. High 57°, low 41°.
Pressure29.83 inHg
Wind11 mph W
Humidity70%
Visibility—
Dew point38°
Sun, 1844° / 32°0
44 °
Bethlehem, Sunday, 18 October
Clear. High 44°, low 32°.
Pressure30.06 inHg
Wind14.2 mph NW
Humidity52%
Visibility—
Dew point24°
Mon, 1948° / 31°0
48 °
Bethlehem, Monday, 19 October
Clear. High 48°, low 31°.
Pressure30.45 inHg
Wind11.2 mph NW
Humidity40%
Visibility—
Dew point18°
Tue, 2054° / 30°0
54 °
Bethlehem, Tuesday, 20 October
Partly cloudy. High 54°, low 30°.
Pressure30.56 inHg
Wind4.3 mph NW
Humidity37%
Visibility—
Dew point21°
Wed, 2154° / 35°0
54 °
Bethlehem, Wednesday, 21 October
Overcast. High 54°, low 35°.
Pressure30.53 inHg
Wind5.8 mph S
Humidity60%
Visibility—
Dew point35°
Thu, 2252° / 38°0.02
52 °
Bethlehem, Thursday, 22 October
Light rain. High 52°, low 38°.
Pressure30.30 inHg
Wind5.8 mph SE
Humidity80%
Visibility—
Dew point40°
Fri, 2362° / 45°0.01
62 °
Bethlehem, Friday, 23 October
Light rain. High 62°, low 45°.
Pressure30.00 inHg
Wind9.8 mph SW
Humidity69%
Visibility—
Dew point45°
Sat, 2454° / 40°0
54 °
Bethlehem, Saturday, 24 October
Partly cloudy. High 54°, low 40°.
Pressure30.00 inHg
Wind11.5 mph NW
Humidity57%
Visibility—
Dew point34°
Sun, 2551° / 39°0
51 °
Bethlehem, Sunday, 25 October
Partly cloudy. High 51°, low 39°.
Pressure30.12 inHg
Wind5 mph NW
Humidity60%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2656° / 42°0.13
56 °
Bethlehem, Monday, 26 October
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.13 in
Chance of precipitation30%
Record high78° (1963)
Record low31° (1962)
Tue, 2756° / 42°0.15
56 °
Bethlehem, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.15 in
Chance of precipitation25%
Record high79° (1963)
Record low27° (1976)
Wed, 2856° / 40°0.19
56 °
Bethlehem, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.19 in
Chance of precipitation32%
Record high77° (2023)
Record low26° (1976)
Thu, 2954° / 39°0.18
54 °
Bethlehem, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.18 in
Chance of precipitation27%
Record high69° (1989)
Record low28° (1965)
Fri, 3053° / 39°0.17
53 °
Bethlehem, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.17 in
Chance of precipitation25%
Record high73° (2024)
Record low29° (1962)
Sat, 3155° / 39°0.08
55 °
Bethlehem, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.08 in
Chance of precipitation22%
Record high77° (2024)
Record low22° (2011)
Sun, 0155° / 41°0.12
55 °
Bethlehem, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.12 in
Chance of precipitation28%
Record high75° (2024)
Record low29° (1964)
Mon, 0255° / 41°0.08
55 °
Bethlehem, Monday, 2 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.08 in
Chance of precipitation33%
Record high72° (1982)
Record low26° (1965)
Tue, 0355° / 40°0.12
55 °
Bethlehem, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.12 in
Chance of precipitation33%
Record high71° (2017)
Record low26° (1980)
Wed, 0454° / 39°0.05
54 °
Bethlehem, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.05 in
Chance of precipitation25%
Record high71° (1987)
Record low28° (2013)
Thu, 0553° / 39°0.15
53 °
Bethlehem, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.15 in
Chance of precipitation32%
Record high73° (2022)
Record low28° (2006)
Fri, 0652° / 39°0.09
52 °
Bethlehem, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.09 in
Chance of precipitation33%
Record high76° (2024)
Record low26° (2012)
Sat, 0752° / 37°0.08
52 °
Bethlehem, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.08 in
Chance of precipitation25%
Record high73° (2022)
Record low26° (1962)
Sun, 0851° / 37°0.16
51 °
Bethlehem, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.16 in
Chance of precipitation33%
Record high72° (2020)
Record low24° (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 Bethlehem, 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 Bethlehem, 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.