As of 05:25 EDT

Weather in Chester, CT

47°

Chester, Wednesday, 21 October, 05:25

Overcast. Feels like 45°. High 61°, low 42°.

Pressure30.24 inHg

Wind4 mph N

Humidity76%

Visibility6.2 mi

Dew point39°

See detailed hourly forecast

Monthly outlook for Chester, CT: average high 58.1°, average low 43.7°. That is 0.3° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 4 days and 2.0 inches. The warmest day looks like 27 October (65.5°), the coolest 1 November (31.4°).

58.1°/43.7°

Average high / low

+0.3°

Above normal

3 / 4

Wet days / normal

0.5 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
21 October – 30 October	59.5°	58.2°	+0.7°
31 October – 9 November	55.9°	55.5°	+0.2°
10 November – 19 November	at normal	51.1°	—

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 (11 mi).

Thu, 2265° / 37°

65 °

Chester, Thursday, 22 October

Clear. High 65°, low 37°.

Pressure29.94 inHg

Wind11.3 mph N

Humidity41%

Visibility6.2 mi

Dew point34°

Fri, 2353° / 40°

53 °

Chester, Friday, 23 October

Clear. High 53°, low 40°.

Pressure30.36 inHg

Wind9.6 mph N

Humidity52%

Visibility6.2 mi

Dew point32°

Sat, 2456° / 36°

56 °

Chester, Saturday, 24 October

Clear. High 56°, low 36°.

Pressure30.56 inHg

Wind4.3 mph NW

Humidity46%

Visibility6.2 mi

Dew point32°

Sun, 2563° / 36°

63 °

Chester, Sunday, 25 October

Clear. High 63°, low 36°.

Pressure30.56 inHg

Wind5.5 mph SW

Humidity57%

Visibility—

Dew point37°

Mon, 2665° / 40°

65 °

Chester, Monday, 26 October

Clear. High 65°, low 40°.

Pressure30.30 inHg

Wind5.5 mph W

Humidity54%

Visibility—

Dew point39°

Tue, 2765° / 49°

65 °

Chester, Tuesday, 27 October

Partly cloudy. High 65°, low 49°.

Pressure30.12 inHg

Wind7.8 mph E

Humidity60%

Visibility—

Dew point45°

Wed, 2852° / 49°

52 °

Chester, Wednesday, 28 October

Overcast. High 52°, low 49°.

Pressure30.39 inHg

Wind9.6 mph E

Humidity80%

Visibility—

Dew point44°

Thu, 2961° / 51°

0.05

61 °

Chester, Thursday, 29 October

Light rain. High 61°, low 51°.

Pressure30.09 inHg

Wind12.3 mph S

Humidity94%

Visibility—

Dew point53°

Fri, 3053° / 39°

53 °

Chester, Friday, 30 October

Clear. High 53°, low 39°.

Pressure30.06 inHg

Wind11 mph W

Humidity46%

Visibility—

Dew point30°

Sat, 3146° / 33°

46 °

Chester, Saturday, 31 October

Clear. High 46°, low 33°.

Pressure30.33 inHg

Wind14.5 mph NW

Humidity42%

Visibility—

Dew point20°

Sun, 0151° / 31°

51 °

Chester, Sunday, 1 November

Overcast. High 51°, low 31°.

Pressure30.56 inHg

Wind10 mph SW

Humidity41%

Visibility—

Dew point21°

Mon, 0259° / 52°

0.02

59 °

Chester, Monday, 2 November

Light rain. High 59°, low 52°.

Pressure30.33 inHg

Wind9.9 mph SW

Humidity73%

Visibility—

Dew point48°

Tue, 0362° / 57°

0.28

62 °

Chester, Tuesday, 3 November

Light rain. High 62°, low 57°.

Pressure30.12 inHg

Wind6.3 mph S

Humidity95%

Visibility—

Dew point59°

Wed, 0458° / 54°

0.15

58 °

Chester, Wednesday, 4 November

Light rain. High 58°, low 54°.

Pressure30.18 inHg

Wind8.3 mph NE

Humidity95%

Visibility—

Dew point54°

Thu, 0559° / 53°

59 °

Chester, Thursday, 5 November

Overcast. High 59°, low 53°.

Pressure30.30 inHg

Wind9.3 mph NE

Humidity79%

Visibility—

Dew point49°

From day 17 onward the outlook is built from 60-year climate statistics

Fri, 0655° / 45°

0.11

55 °

Chester, 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 °

Chester, 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 °

Chester, 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 °

Chester, 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 °

Chester, 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 °

Chester, 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 °

Chester, 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 °

Chester, 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 °

Chester, 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 °

Chester, 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 °

Chester, 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 °

Chester, 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 °

Chester, 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 °

Chester, 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)

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 Chester, 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 Chester, 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.