Monthly outlook for Byram, CT: average high 62.5°, average low 47.9°. That is 1.1° above the climate normal for October. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 4 days and 2.2 inches. The warmest day looks like 14 October (74.3°), the coolest 18 October (36.2°).
62.5°/47.9°
Average high / low
+1.1°
Above normal
4 / 4
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
64.3°
61.7°
+1.4°
24 October – 2 November
59.6°
58.2°
+0.8°
3 November – 12 November
at normal
54.6°
—
October records over 66 years
89.8°2 October 2019All-time high
31.5°27 October 1976All-time low
Thu, 1561° / 50°0
61 °
Byram, Thursday, 15 October
Clear. High 61°, low 50°.
Pressure30.24 inHg
Wind4.9 mph N
Humidity57%
Visibility6.2 mi
Dew point44°
Fri, 1673° / 48°0.23
73 °
Byram, Friday, 16 October
Rain. High 73°, low 48°.
Pressure29.83 inHg
Wind7.7 mph S
Humidity98%
Visibility6.2 mi
Dew point63°
Sat, 1761° / 41°0
61 °
Byram, Saturday, 17 October
Clear. High 61°, low 41°.
Pressure30.09 inHg
Wind13 mph NW
Humidity46%
Visibility6.2 mi
Dew point32°
Sun, 1852° / 36°0
52 °
Byram, Sunday, 18 October
Clear. High 52°, low 36°.
Pressure30.62 inHg
Wind3.6 mph N
Humidity51%
Visibility6.2 mi
Dew point28°
Mon, 1959° / 40°0
59 °
Byram, Monday, 19 October
Clear. High 59°, low 40°.
Pressure30.65 inHg
Wind4.4 mph SW
Humidity56%
Visibility—
Dew point37°
Tue, 2068° / 47°0
68 °
Byram, Tuesday, 20 October
Overcast. High 68°, low 47°.
Pressure30.39 inHg
Wind5.3 mph NW
Humidity53%
Visibility—
Dew point42°
Wed, 2166° / 55°0
66 °
Byram, Wednesday, 21 October
Partly cloudy. High 66°, low 55°.
Pressure30.33 inHg
Wind4.6 mph N
Humidity56%
Visibility—
Dew point46°
Thu, 2267° / 57°0.04
67 °
Byram, Thursday, 22 October
Light rain. High 67°, low 57°.
Pressure30.18 inHg
Wind16.7 mph SW
Humidity61%
Visibility—
Dew point48°
Fri, 2362° / 47°0.01
62 °
Byram, Friday, 23 October
Light rain. High 62°, low 47°.
Pressure30.18 inHg
Wind17.9 mph NW
Humidity48%
Visibility—
Dew point33°
Sat, 2461° / 45°0
61 °
Byram, Saturday, 24 October
Overcast. High 61°, low 45°.
Pressure30.36 inHg
Wind9.5 mph SW
Humidity39%
Visibility—
Dew point28°
Sun, 2560° / 49°0.31
60 °
Byram, Sunday, 25 October
Rain. High 60°, low 49°.
Pressure29.88 inHg
Wind15.1 mph NW
Humidity67%
Visibility—
Dew point49°
Mon, 2652° / 45°0
52 °
Byram, Monday, 26 October
Mostly clear. High 52°, low 45°.
Pressure30.12 inHg
Wind15.1 mph NW
Humidity49%
Visibility—
Dew point29°
Tue, 2760° / 45°0
60 °
Byram, Tuesday, 27 October
Overcast. High 60°, low 45°.
Pressure30.15 inHg
Wind8.5 mph W
Humidity45%
Visibility—
Dew point31°
Wed, 2862° / 51°0
62 °
Byram, Wednesday, 28 October
Overcast. High 62°, low 51°.
Pressure30.15 inHg
Wind7.9 mph SW
Humidity48%
Visibility—
Dew point37°
Thu, 2962° / 54°0.46
62 °
Byram, Thursday, 29 October
Rain. High 62°, low 54°.
Pressure29.85 inHg
Wind19 mph S
Humidity90%
Visibility—
Dew point57°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3056° / 44°0.13
56 °
Byram, Friday, 30 October
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.13 in
Chance of precipitation22%
Record high75° (2024)
Record low34° (2011)
Sat, 3157° / 45°0.06
57 °
Byram, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high57°
Average low45°
Average precipitation0.06 in
Chance of precipitation22%
Record high80° (2024)
Record low31° (2020)
Sun, 0158° / 47°0.1
58 °
Byram, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high58°
Average low47°
Average precipitation0.1 in
Chance of precipitation27%
Record high78° (2024)
Record low36° (1976)
Mon, 0258° / 46°0.09
58 °
Byram, Monday, 2 November
Climate normal for this date — 60-year average.
Average high58°
Average low46°
Average precipitation0.09 in
Chance of precipitation35%
Record high73° (1982)
Record low31° (1965)
Tue, 0358° / 45°0.1
58 °
Byram, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high58°
Average low45°
Average precipitation0.1 in
Chance of precipitation23%
Record high74° (2003)
Record low35° (1996)
Wed, 0456° / 44°0.05
56 °
Byram, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.05 in
Chance of precipitation20%
Record high72° (1975)
Record low34° (2013)
Thu, 0556° / 44°0.12
56 °
Byram, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.12 in
Chance of precipitation33%
Record high72° (2022)
Record low35° (1965)
Fri, 0655° / 44°0.08
55 °
Byram, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.08 in
Chance of precipitation28%
Record high78° (2024)
Record low34° (1962)
Sat, 0755° / 43°0.09
55 °
Byram, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low43°
Average precipitation0.09 in
Chance of precipitation27%
Record high74° (2022)
Record low32° (1962)
Sun, 0854° / 42°0.15
54 °
Byram, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.15 in
Chance of precipitation28%
Record high71° (2020)
Record low30° (2019)
Mon, 0954° / 42°0.08
54 °
Byram, Monday, 9 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.08 in
Chance of precipitation23%
Record high72° (1975)
Record low27° (2019)
Tue, 1055° / 42°0.15
55 °
Byram, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high55°
Average low42°
Average precipitation0.15 in
Chance of precipitation38%
Record high69° (2020)
Record low26° (2017)
Wed, 1153° / 42°0.14
53 °
Byram, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.14 in
Chance of precipitation35%
Record high68° (2020)
Record low24° (2017)
Thu, 1252° / 40°0.14
52 °
Byram, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.14 in
Chance of precipitation40%
Record high68° (2022)
Record low27° (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 Byram, 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 Byram, 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.