As of 07:54 EDT

Weather in Ralston, MD

54°

Ralston, Friday, 9 October, 07:54

Partly cloudy. Feels like 52°. High 75°, low 48°.

Pressure30.18 inHg

Wind5.7 mph W

Humidity67%

Visibility6.2 mi

Dew point46°

See detailed hourly forecast

Monthly outlook for Ralston, MD: average high 67.3°, average low 51.3°. That is 2.1° above the climate normal for October. Precipitation is expected on 4 days (about 2.5 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (79°), the coolest 21 October (45.9°).

67.3°/51.3°

Average high / low

+2.1°

Above normal

4 / 4

Wet days / normal

2.5 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 October – 18 October	70.3°	64.6°	+3.2°
19 October – 28 October	62.3°	60.9°	+0.8°
29 October – 7 November	at normal	57.8°	—

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 (7 mi).

Sat, 1074° / 50°

74 °

Ralston, Saturday, 10 October

Overcast. High 74°, low 50°.

Pressure30.45 inHg

Wind7.6 mph SE

Humidity44%

Visibility6.2 mi

Dew point46°

Sun, 1164° / 58°

1.42

64 °

Ralston, Sunday, 11 October

Heavy rain. High 64°, low 58°.

Pressure30.15 inHg

Wind15.4 mph E

Humidity98%

Visibility2.8 mi

Dew point60°

Mon, 1272° / 60°

0.13

72 °

Ralston, Monday, 12 October

Rain. High 72°, low 60°.

Pressure29.77 inHg

Wind14.8 mph NW

Humidity71%

Visibility6.2 mi

Dew point60°

Tue, 1379° / 59°

79 °

Ralston, Tuesday, 13 October

Mostly clear. High 79°, low 59°.

Pressure29.88 inHg

Wind8.7 mph W

Humidity64%

Visibility—

Dew point58°

Wed, 1474° / 58°

74 °

Ralston, Wednesday, 14 October

Partly cloudy. High 74°, low 58°.

Pressure29.97 inHg

Wind8.4 mph NW

Humidity80%

Visibility—

Dew point64°

Thu, 1563° / 47°

63 °

Ralston, Thursday, 15 October

Overcast. High 63°, low 47°.

Pressure30.27 inHg

Wind8.3 mph SE

Humidity34%

Visibility—

Dew point28°

Fri, 1676° / 59°

0.01

76 °

Ralston, Friday, 16 October

Light rain. High 76°, low 59°.

Pressure30.12 inHg

Wind11.3 mph S

Humidity53%

Visibility—

Dew point48°

Sat, 1766° / 49°

0.36

66 °

Ralston, Saturday, 17 October

Rain. High 66°, low 49°.

Pressure30.09 inHg

Wind10.1 mph NW

Humidity38%

Visibility—

Dew point33°

Sun, 1859° / 48°

0.55

59 °

Ralston, Sunday, 18 October

Rain. High 59°, low 48°.

Pressure30.24 inHg

Wind11.2 mph N

Humidity61%

Visibility—

Dew point40°

Mon, 1960° / 46°

60 °

Ralston, Monday, 19 October

Overcast. High 60°, low 46°.

Pressure30.39 inHg

Wind8.3 mph NE

Humidity55%

Visibility—

Dew point38°

Tue, 2060° / 46°

60 °

Ralston, Tuesday, 20 October

Overcast. High 60°, low 46°.

Pressure30.42 inHg

Wind10.4 mph NE

Humidity49%

Visibility—

Dew point34°

Wed, 2161° / 46°

61 °

Ralston, Wednesday, 21 October

Partly cloudy. High 61°, low 46°.

Pressure30.45 inHg

Wind10.6 mph NE

Humidity59%

Visibility—

Dew point39°

Thu, 2262° / 48°

62 °

Ralston, Thursday, 22 October

Overcast. High 62°, low 48°.

Pressure30.33 inHg

Wind8.1 mph NE

Humidity63%

Visibility—

Dew point43°

Fri, 2366° / 50°

66 °

Ralston, Friday, 23 October

Mostly clear. High 66°, low 50°.

Pressure30.21 inHg

Wind8.2 mph NE

Humidity46%

Visibility—

Dew point37°

Sat, 2464° / 49°

64 °

Ralston, Saturday, 24 October

Overcast. High 64°, low 49°.

Pressure30.15 inHg

Wind8.9 mph NE

Humidity56%

Visibility—

Dew point42°

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

Sun, 2560° / 46°

0.16

60 °

Ralston, 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 °

Ralston, 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 °

Ralston, 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 °

Ralston, 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 °

Ralston, 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 °

Ralston, 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 °

Ralston, 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 °

Ralston, 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 °

Ralston, 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 °

Ralston, 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 °

Ralston, 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 °

Ralston, 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)

Fri, 0656° / 42°

0.07

56 °

Ralston, Friday, 6 November

Climate normal for this date — 60-year average.

Average high56°

Average low42°

Average precipitation0.07 in

Chance of precipitation25%

Record high79° (2024)

Record low27° (1967)

Sat, 0755° / 41°

0.07

55 °

Ralston, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high55°

Average low41°

Average precipitation0.07 in

Chance of precipitation23%

Record high74° (2024)

Record low28° (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 Ralston, 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 Ralston, 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.