As of 16:20 EDT

Weather in Four Locks, MD

90°

Four Locks, Saturday, 8 August, 16:20

Overcast. Feels like 101°. High 90°, low 70°.

Pressure30.00 inHg

Wind10.9 mph W

Humidity65%

Visibility6.2 mi

Dew point74°

See detailed hourly forecast

Monthly outlook for Four Locks, MD: average high 83.6°, average low 63°. That is 0.2° above the climate normal for August. Precipitation is expected on 6 days (about 1.2 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 10 August (95.9°), the coolest 15 August (53.9°).

83.6°/63°

Average high / low

+0.2°

Above normal

6 / 5

Wet days / normal

1.2 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 August – 17 August	86.1°	84.1°	+1.1°
18 August – 27 August	79.4°	82.5°	-1.7°
28 August – 6 September	at normal	81.7°	—

August records over 66 years

99.7°12 August 2021All-time high

48.9°29 August 1982All-time low

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

Sun, 0987° / 70°

87 °

Four Locks, Sunday, 9 August

Partly cloudy. High 87°, low 70°.

Pressure30.03 inHg

Wind8.1 mph NW

Humidity42%

Visibility6.2 mi

Dew point62°

Mon, 1096° / 68°

0.11

96 °

Four Locks, Monday, 10 August

Rain. High 96°, low 68°.

Pressure30.06 inHg

Wind9.7 mph NW

Humidity53%

Visibility6.2 mi

Dew point66°

Tue, 1190° / 66°

0.03

90 °

Four Locks, Tuesday, 11 August

Light rain. High 90°, low 66°.

Pressure29.94 inHg

Wind9.1 mph W

Humidity48%

Visibility6.2 mi

Dew point63°

Wed, 1283° / 66°

0.44

83 °

Four Locks, Wednesday, 12 August

Rain. High 83°, low 66°.

Pressure29.80 inHg

Wind6.6 mph NW

Humidity62%

Visibility6.2 mi

Dew point67°

Thu, 1387° / 67°

0.05

87 °

Four Locks, Thursday, 13 August

Light rain. High 87°, low 67°.

Pressure29.83 inHg

Wind11.7 mph W

Humidity41%

Visibility—

Dew point58°

Fri, 1481° / 60°

0.16

81 °

Four Locks, Friday, 14 August

Light rain. High 81°, low 60°.

Pressure29.97 inHg

Wind11.2 mph NW

Humidity36%

Visibility—

Dew point49°

Sat, 1578° / 54°

78 °

Four Locks, Saturday, 15 August

Clear. High 78°, low 54°.

Pressure30.21 inHg

Wind9.7 mph NW

Humidity34%

Visibility—

Dew point44°

Sun, 1682° / 55°

82 °

Four Locks, Sunday, 16 August

Clear. High 82°, low 55°.

Pressure30.27 inHg

Wind4.4 mph N

Humidity28%

Visibility—

Dew point43°

Mon, 1788° / 58°

88 °

Four Locks, Monday, 17 August

Partly cloudy. High 88°, low 58°.

Pressure30.09 inHg

Wind5.7 mph S

Humidity40%

Visibility—

Dew point55°

Tue, 1877° / 66°

0.22

77 °

Four Locks, Tuesday, 18 August

Light rain. High 77°, low 66°.

Pressure29.94 inHg

Wind5 mph SW

Humidity75%

Visibility—

Dew point67°

Wed, 1985° / 65°

85 °

Four Locks, Wednesday, 19 August

Partly cloudy. High 85°, low 65°.

Pressure29.91 inHg

Wind10.5 mph NW

Humidity38%

Visibility—

Dew point55°

Thu, 2083° / 60°

0.01

83 °

Four Locks, Thursday, 20 August

Light rain. High 83°, low 60°.

Pressure29.97 inHg

Wind5.4 mph NE

Humidity45%

Visibility—

Dew point53°

Fri, 2169° / 61°

0.11

69 °

Four Locks, Friday, 21 August

Light rain. High 69°, low 61°.

Pressure29.88 inHg

Wind4.5 mph NE

Humidity96%

Visibility—

Dew point65°

Sat, 2286° / 64°

86 °

Four Locks, Saturday, 22 August

Clear. High 86°, low 64°.

Pressure29.80 inHg

Wind11.6 mph NW

Humidity36%

Visibility—

Dew point53°

Sun, 2377° / 58°

77 °

Four Locks, Sunday, 23 August

Clear. High 77°, low 58°.

Pressure30.06 inHg

Wind12.9 mph NW

Humidity25%

Visibility—

Dew point34°

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

Mon, 2482° / 64°

0.06

82 °

Four Locks, Monday, 24 August

Climate normal for this date — 60-year average.

Average high82°

Average low64°

Average precipitation0.06 in

Chance of precipitation22%

Record high95° (1968)

Record low54° (1971)

Tue, 2583° / 65°

0.05

83 °

Four Locks, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high83°

Average low65°

Average precipitation0.05 in

Chance of precipitation15%

Record high95° (2007)

Record low54° (1971)

Wed, 2684° / 65°

0.05

84 °

Four Locks, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high84°

Average low65°

Average precipitation0.05 in

Chance of precipitation20%

Record high94° (1975)

Record low55° (1963)

Thu, 2783° / 66°

0.13

83 °

Four Locks, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high83°

Average low66°

Average precipitation0.13 in

Chance of precipitation37%

Record high94° (2020)

Record low53° (2025)

Fri, 2884° / 66°

0.14

84 °

Four Locks, Friday, 28 August

Climate normal for this date — 60-year average.

Average high84°

Average low66°

Average precipitation0.14 in

Chance of precipitation33%

Record high97° (2024)

Record low52° (2025)

Sat, 2983° / 66°

0.06

83 °

Four Locks, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high83°

Average low66°

Average precipitation0.06 in

Chance of precipitation27%

Record high94° (1973)

Record low49° (1982)

Sun, 3083° / 65°

0.04

83 °

Four Locks, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high83°

Average low65°

Average precipitation0.04 in

Chance of precipitation25%

Record high93° (1973)

Record low49° (1986)

Mon, 3182° / 65°

0.08

82 °

Four Locks, Monday, 31 August

Climate normal for this date — 60-year average.

Average high82°

Average low65°

Average precipitation0.08 in

Chance of precipitation27%

Record high95° (2012)

Record low52° (1976)

Tue, 0181° / 64°

0.11

81 °

Four Locks, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.11 in

Chance of precipitation32%

Record high95° (2010)

Record low51° (1967)

Wed, 0281° / 63°

0.08

81 °

Four Locks, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high81°

Average low63°

Average precipitation0.08 in

Chance of precipitation25%

Record high96° (2010)

Record low53° (1967)

Thu, 0382° / 64°

0.05

82 °

Four Locks, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high82°

Average low64°

Average precipitation0.05 in

Chance of precipitation23%

Record high94° (2010)

Record low49° (1967)

Fri, 0481° / 64°

0.1

81 °

Four Locks, Friday, 4 September

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.1 in

Chance of precipitation27%

Record high94° (2023)

Record low50° (2024)

Sat, 0581° / 63°

0.07

81 °

Four Locks, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high81°

Average low63°

Average precipitation0.07 in

Chance of precipitation25%

Record high94° (2023)

Record low51° (1997)

Sun, 0680° / 63°

0.21

80 °

Four Locks, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high80°

Average low63°

Average precipitation0.21 in

Chance of precipitation32%

Record high94° (2023)

Record low50° (2000)

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 Four Locks, 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 Four Locks, 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.