As of 18:15 EDT

Weather in Chester, MD

86°

Chester, Saturday, 8 August, 18:15

Overcast. Feels like 98°. High 88°, low 73°.

Pressure29.97 inHg

Wind10.9 mph S

Humidity79%

Visibility6.2 mi

Dew point77°

See detailed hourly forecast

Monthly outlook for Chester, MD: average high 81.6°, average low 71.9°. That is 0.7° below the climate normal for August. Precipitation is expected on 4 days (about 1.7 inches), against a normal of 6 days and 2.3 inches. The warmest day looks like 9 August (92.2°), the coolest 23 August (66.2°).

81.6°/71.9°

Average high / low

−0.7°

Below normal

4 / 6

Wet days / normal

1.7 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 August – 17 August	83.1°	83.5°	-0.2°
18 August – 27 August	79.1°	82°	-1.6°
28 August – 6 September	at normal	81.3°	—

August records over 66 years

97.9°15 August 1988All-time high

54.7°29 August 1982All-time low

Climate normals and records are computed from the nearest reference point — Annapolis (12 mi).

Sun, 0992° / 73°

92 °

Chester, Sunday, 9 August

Partly cloudy. High 92°, low 73°.

Pressure30.00 inHg

Wind1.5 mph SW

Humidity64%

Visibility6.2 mi

Dew point70°

Mon, 1087° / 76°

87 °

Chester, Monday, 10 August

Overcast. High 87°, low 76°.

Pressure30.03 inHg

Wind4.1 mph N

Humidity65%

Visibility6.2 mi

Dew point70°

Tue, 1187° / 76°

0.03

87 °

Chester, Tuesday, 11 August

Light rain. High 87°, low 76°.

Pressure29.97 inHg

Wind11.4 mph NW

Humidity62%

Visibility6.2 mi

Dew point67°

Wed, 1283° / 76°

0.04

83 °

Chester, Wednesday, 12 August

Light rain. High 83°, low 76°.

Pressure29.83 inHg

Wind8.4 mph NW

Humidity64%

Visibility6.2 mi

Dew point68°

Thu, 1387° / 76°

0.03

87 °

Chester, Thursday, 13 August

Light rain. High 87°, low 76°.

Pressure29.80 inHg

Wind17.8 mph N

Humidity59%

Visibility—

Dew point68°

Fri, 1473° / 66°

0.76

73 °

Chester, Friday, 14 August

Heavy rain. High 73°, low 66°.

Pressure30.00 inHg

Wind12 mph W

Humidity64%

Visibility—

Dew point56°

Sat, 1576° / 68°

76 °

Chester, Saturday, 15 August

Clear. High 76°, low 68°.

Pressure30.21 inHg

Wind17.9 mph NE

Humidity45%

Visibility—

Dew point50°

Sun, 1676° / 68°

76 °

Chester, Sunday, 16 August

Clear. High 76°, low 68°.

Pressure30.30 inHg

Wind10 mph NE

Humidity48%

Visibility—

Dew point51°

Mon, 1781° / 72°

81 °

Chester, Monday, 17 August

Clear. High 81°, low 72°.

Pressure30.15 inHg

Wind21.3 mph S

Humidity62%

Visibility—

Dew point64°

Tue, 1879° / 72°

0.21

79 °

Chester, Tuesday, 18 August

Rain. High 79°, low 72°.

Pressure30.00 inHg

Wind21.2 mph S

Humidity93%

Visibility—

Dew point70°

Wed, 1983° / 74°

0.02

83 °

Chester, Wednesday, 19 August

Light rain. High 83°, low 74°.

Pressure29.88 inHg

Wind13 mph NE

Humidity58%

Visibility—

Dew point64°

Thu, 2078° / 72°

78 °

Chester, Thursday, 20 August

Overcast. High 78°, low 72°.

Pressure29.97 inHg

Wind14.9 mph SE

Humidity54%

Visibility—

Dew point58°

Fri, 2176° / 72°

0.61

76 °

Chester, Friday, 21 August

Rain. High 76°, low 72°.

Pressure29.88 inHg

Wind21.8 mph S

Humidity86%

Visibility—

Dew point71°

Sat, 2283° / 72°

0.04

83 °

Chester, Saturday, 22 August

Light rain. High 83°, low 72°.

Pressure29.77 inHg

Wind12 mph N

Humidity69%

Visibility—

Dew point66°

Sun, 2376° / 66°

76 °

Chester, Sunday, 23 August

Partly cloudy. High 76°, low 66°.

Pressure30.06 inHg

Wind26.2 mph N

Humidity42%

Visibility—

Dew point46°

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

Mon, 2482° / 69°

0.07

82 °

Chester, Monday, 24 August

Climate normal for this date — 60-year average.

Average high82°

Average low69°

Average precipitation0.07 in

Chance of precipitation20%

Record high92° (1995)

Record low58° (2024)

Tue, 2582° / 69°

0.07

82 °

Chester, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high82°

Average low69°

Average precipitation0.07 in

Chance of precipitation18%

Record high93° (1968)

Record low61° (1977)

Wed, 2683° / 70°

0.06

83 °

Chester, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high83°

Average low70°

Average precipitation0.06 in

Chance of precipitation27%

Record high92° (1975)

Record low61° (1963)

Thu, 2783° / 70°

0.17

83 °

Chester, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high83°

Average low70°

Average precipitation0.17 in

Chance of precipitation38%

Record high92° (1987)

Record low59° (2025)

Fri, 2883° / 71°

0.17

83 °

Chester, Friday, 28 August

Climate normal for this date — 60-year average.

Average high83°

Average low71°

Average precipitation0.17 in

Chance of precipitation48%

Record high95° (1973)

Record low58° (2025)

Sat, 2982° / 70°

0.12

82 °

Chester, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high82°

Average low70°

Average precipitation0.12 in

Chance of precipitation30%

Record high92° (1973)

Record low55° (1982)

Sun, 3082° / 69°

0.07

82 °

Chester, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high82°

Average low69°

Average precipitation0.07 in

Chance of precipitation25%

Record high92° (1973)

Record low56° (1986)

Mon, 3182° / 69°

0.09

82 °

Chester, Monday, 31 August

Climate normal for this date — 60-year average.

Average high82°

Average low69°

Average precipitation0.09 in

Chance of precipitation28%

Record high92° (1973)

Record low58° (1986)

Tue, 0181° / 68°

0.16

81 °

Chester, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high81°

Average low68°

Average precipitation0.16 in

Chance of precipitation28%

Record high92° (1980)

Record low58° (2025)

Wed, 0281° / 68°

0.13

81 °

Chester, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high81°

Average low68°

Average precipitation0.13 in

Chance of precipitation38%

Record high92° (1980)

Record low58° (1967)

Thu, 0381° / 68°

0.12

81 °

Chester, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high81°

Average low68°

Average precipitation0.12 in

Chance of precipitation23%

Record high93° (2023)

Record low56° (1967)

Fri, 0481° / 68°

0.09

81 °

Chester, Friday, 4 September

Climate normal for this date — 60-year average.

Average high81°

Average low68°

Average precipitation0.09 in

Chance of precipitation28%

Record high96° (2023)

Record low56° (1997)

Sat, 0580° / 68°

0.13

80 °

Chester, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high80°

Average low68°

Average precipitation0.13 in

Chance of precipitation28%

Record high95° (2023)

Record low57° (1997)

Sun, 0680° / 67°

0.22

80 °

Chester, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high80°

Average low67°

Average precipitation0.22 in

Chance of precipitation33%

Record high94° (2023)

Record low56° (1962)

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, MD 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, MD 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.