As of 18:27 EDT

Weather in Garrison, MD

67°

Garrison, Wednesday, 7 October, 18:27

Clear. Feels like 66°. High 69°, low 41°.

Pressure29.88 inHg

Wind4 mph SW

Humidity67%

Visibility6.2 mi

Dew point55°

See detailed hourly forecast

Monthly outlook for Garrison, MD: average high 65.5°, average low 47.8°. That is 0.8° above the climate normal for October. Precipitation is expected on 3 days (about 0.2 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (82.3°), the coolest 19 October (35.5°).

65.5°/47.8°

Average high / low

+0.8°

Above normal

3 / 4

Wet days / normal

0.2 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
7 October – 16 October	70.5°	65.5°	+2.8°
17 October – 26 October	57.2°	61.3°	-2.3°
27 October – 5 November	at normal	58.7°	—

October records over 66 years

90.7°2 October 2019All-time high

27.1°24 October 1969All-time low

Climate normals and records are computed from the nearest reference point — Reisterstown (5 mi).

Thu, 0875° / 51°

75 °

Garrison, Thursday, 8 October

Clear. High 75°, low 51°.

Pressure29.94 inHg

Wind12.1 mph NW

Humidity40%

Visibility6.2 mi

Dew point46°

Fri, 0969° / 46°

69 °

Garrison, Friday, 9 October

Clear. High 69°, low 46°.

Pressure30.21 inHg

Wind8.9 mph NW

Humidity40%

Visibility6.2 mi

Dew point43°

Sat, 1068° / 51°

68 °

Garrison, Saturday, 10 October

Overcast. High 68°, low 51°.

Pressure30.47 inHg

Wind6.4 mph SE

Humidity45%

Visibility6.2 mi

Dew point44°

Sun, 1167° / 55°

0.04

67 °

Garrison, Sunday, 11 October

Light rain. High 67°, low 55°.

Pressure30.33 inHg

Wind8.2 mph SE

Humidity76%

Visibility6.2 mi

Dew point56°

Mon, 1274° / 63°

0.08

74 °

Garrison, Monday, 12 October

Light rain. High 74°, low 63°.

Pressure29.80 inHg

Wind9.8 mph NW

Humidity94%

Visibility—

Dew point65°

Tue, 1382° / 61°

0.04

82 °

Garrison, Tuesday, 13 October

Light rain. High 82°, low 61°.

Pressure29.77 inHg

Wind16.2 mph NW

Humidity68%

Visibility—

Dew point59°

Wed, 1460° / 47°

60 °

Garrison, Wednesday, 14 October

Clear. High 60°, low 47°.

Pressure30.06 inHg

Wind16.4 mph NW

Humidity46%

Visibility—

Dew point32°

Thu, 1566° / 45°

66 °

Garrison, Thursday, 15 October

Clear. High 66°, low 45°.

Pressure30.12 inHg

Wind9.9 mph N

Humidity40%

Visibility—

Dew point32°

Fri, 1675° / 55°

0.03

75 °

Garrison, Friday, 16 October

Light rain. High 75°, low 55°.

Pressure30.00 inHg

Wind12.8 mph NW

Humidity38%

Visibility—

Dew point39°

Sat, 1761° / 48°

61 °

Garrison, Saturday, 17 October

Clear. High 61°, low 48°.

Pressure29.97 inHg

Wind17 mph NW

Humidity52%

Visibility—

Dew point41°

Sun, 1853° / 41°

53 °

Garrison, Sunday, 18 October

Clear. High 53°, low 41°.

Pressure30.24 inHg

Wind12.7 mph NW

Humidity46%

Visibility—

Dew point28°

Mon, 1950° / 35°

50 °

Garrison, Monday, 19 October

Clear. High 50°, low 35°.

Pressure30.59 inHg

Wind11.9 mph N

Humidity37%

Visibility—

Dew point19°

Tue, 2055° / 36°

55 °

Garrison, Tuesday, 20 October

Clear. High 55°, low 36°.

Pressure30.59 inHg

Wind4.9 mph N

Humidity32%

Visibility—

Dew point18°

Wed, 2163° / 41°

63 °

Garrison, Wednesday, 21 October

Overcast. High 63°, low 41°.

Pressure30.21 inHg

Wind7.5 mph NW

Humidity32%

Visibility—

Dew point23°

Thu, 2261° / 51°

61 °

Garrison, Thursday, 22 October

Overcast. High 61°, low 51°.

Pressure29.94 inHg

Wind5.7 mph SW

Humidity50%

Visibility—

Dew point40°

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

Fri, 2362° / 46°

0.11

62 °

Garrison, Friday, 23 October

Climate normal for this date — 60-year average.

Average high62°

Average low46°

Average precipitation0.11 in

Chance of precipitation22%

Record high78° (2007)

Record low31° (1969)

Sat, 2460° / 46°

0.13

60 °

Garrison, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high60°

Average low46°

Average precipitation0.13 in

Chance of precipitation33%

Record high78° (2001)

Record low27° (1969)

Sun, 2560° / 46°

0.16

60 °

Garrison, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high60°

Average low46°

Average precipitation0.16 in

Chance of precipitation27%

Record high75° (2021)

Record low34° (1962)

Mon, 2660° / 46°

0.13

60 °

Garrison, Monday, 26 October

Climate normal for this date — 60-year average.

Average high60°

Average low46°

Average precipitation0.13 in

Chance of precipitation33%

Record high79° (2023)

Record low31° (1962)

Tue, 2760° / 45°

0.18

60 °

Garrison, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.18 in

Chance of precipitation28%

Record high79° (1963)

Record low31° (1976)

Wed, 2860° / 45°

0.12

60 °

Garrison, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.12 in

Chance of precipitation23%

Record high79° (1984)

Record low28° (1976)

Thu, 2958° / 43°

0.25

58 °

Garrison, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high58°

Average low43°

Average precipitation0.25 in

Chance of precipitation27%

Record high74° (1984)

Record low29° (1965)

Fri, 3058° / 42°

0.11

58 °

Garrison, Friday, 30 October

Climate normal for this date — 60-year average.

Average high58°

Average low42°

Average precipitation0.11 in

Chance of precipitation27%

Record high78° (2016)

Record low29° (2011)

Sat, 3159° / 44°

0.05

59 °

Garrison, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high59°

Average low44°

Average precipitation0.05 in

Chance of precipitation22%

Record high79° (2024)

Record low29° (2011)

Sun, 0160° / 45°

0.07

60 °

Garrison, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.07 in

Chance of precipitation23%

Record high78° (1974)

Record low34° (2002)

Mon, 0260° / 45°

0.13

60 °

Garrison, Monday, 2 November

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.13 in

Chance of precipitation33%

Record high78° (1971)

Record low31° (1976)

Tue, 0359° / 44°

0.07

59 °

Garrison, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high59°

Average low44°

Average precipitation0.07 in

Chance of precipitation32%

Record high76° (2003)

Record low31° (1996)

Wed, 0457° / 42°

0.09

57 °

Garrison, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.09 in

Chance of precipitation23%

Record high75° (1974)

Record low29° (2006)

Thu, 0557° / 42°

0.11

57 °

Garrison, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.11 in

Chance of precipitation32%

Record high75° (1961)

Record low26° (1991)

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 Garrison, 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 Garrison, 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.