As of 18:05 EDT

Weather in McComas, MD

84°Current weather

McComas, Saturday, 8 August, 18:05

Overcast. Feels like 92°. High 87°, low 72°.

Pressure29.97 inHg
Wind6 mph S
Humidity77%
Visibility6.2 mi
Dew point74°

Monthly outlook for McComas, MD: average high 82.5°, average low 67.3°. That is 0.2° above the climate normal for August. Precipitation is expected on 6 days (about 1.2 inches), against a normal of 6 days and 2.3 inches. The warmest day looks like 9 August (91°), the coolest 15 August (58.2°).

82.5°/67.3°
Average high / low
+0.2°
Above normal
6 / 6
Wet days / normal
1.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
8 August – 17 August84.4°82.9°+0.8°
18 August – 27 August79.2°81.4°-1.2°
28 August – 6 Septemberat normal80.7°

August records over 66 years

97.5°15 August 1988All-time high
48.6°30 August 1986All-time low

Climate normals and records are computed from the nearest reference point — Parkville (14 mi).

Sun, 0991° / 72°0Mostly clear
91 °Mostly clear

McComas, Sunday, 9 August

Mostly clear. High 91°, low 72°.

Pressure30.00 inHg
Wind7.5 mph NW
Humidity50%
Visibility6.2 mi
Dew point68°
Mon, 1091° / 74°0.1Rain
91 °Rain

McComas, Monday, 10 August

Rain. High 91°, low 74°.

Pressure30.03 inHg
Wind8 mph NW
Humidity52%
Visibility6.2 mi
Dew point68°
Tue, 1190° / 71°0.14Rain
90 °Rain

McComas, Tuesday, 11 August

Rain. High 90°, low 71°.

Pressure29.94 inHg
Wind9.3 mph W
Humidity60%
Visibility6.2 mi
Dew point67°
Wed, 1285° / 71°0.22Light rain
85 °Light rain

McComas, Wednesday, 12 August

Light rain. High 85°, low 71°.

Pressure29.83 inHg
Wind8.9 mph W
Humidity71%
Visibility6.2 mi
Dew point68°
Thu, 1388° / 70°0.01Light rain
88 °Light rain

McComas, Thursday, 13 August

Light rain. High 88°, low 70°.

Pressure29.80 inHg
Wind11.7 mph W
Humidity46%
Visibility
Dew point63°
Fri, 1476° / 64°0.02Light rain
76 °Light rain

McComas, Friday, 14 August

Light rain. High 76°, low 64°.

Pressure30.00 inHg
Wind7.8 mph N
Humidity50%
Visibility
Dew point54°
Sat, 1577° / 58°0Clear
77 °Clear

McComas, Saturday, 15 August

Clear. High 77°, low 58°.

Pressure30.21 inHg
Wind10.4 mph N
Humidity40%
Visibility
Dew point48°
Sun, 1678° / 59°0Clear
78 °Clear

McComas, Sunday, 16 August

Clear. High 78°, low 59°.

Pressure30.30 inHg
Wind6.8 mph N
Humidity36%
Visibility
Dew point46°
Mon, 1781° / 64°0Mostly clear
81 °Mostly clear

McComas, Monday, 17 August

Mostly clear. High 81°, low 64°.

Pressure30.15 inHg
Wind12.7 mph S
Humidity57%
Visibility
Dew point62°
Tue, 1876° / 71°0.15Light rain
76 °Light rain

McComas, Tuesday, 18 August

Light rain. High 76°, low 71°.

Pressure29.97 inHg
Wind12.2 mph S
Humidity92%
Visibility
Dew point70°
Wed, 1985° / 69°0Partly cloudy
85 °Partly cloudy

McComas, Wednesday, 19 August

Partly cloudy. High 85°, low 69°.

Pressure29.88 inHg
Wind10.5 mph N
Humidity46%
Visibility
Dew point60°
Thu, 2078° / 64°0Overcast
78 °Overcast

McComas, Thursday, 20 August

Overcast. High 78°, low 64°.

Pressure29.97 inHg
Wind7.4 mph NE
Humidity45%
Visibility
Dew point53°
Fri, 2176° / 67°0.45Rain
76 °Rain

McComas, Friday, 21 August

Rain. High 76°, low 67°.

Pressure29.88 inHg
Wind15.5 mph S
Humidity87%
Visibility
Dew point71°
Sat, 2286° / 70°0.01Light rain
86 °Light rain

McComas, Saturday, 22 August

Light rain. High 86°, low 70°.

Pressure29.77 inHg
Wind8.8 mph NW
Humidity46%
Visibility
Dew point60°
Sun, 2374° / 61°0Partly cloudy
74 °Partly cloudy

McComas, Sunday, 23 August

Partly cloudy. High 74°, low 61°.

Pressure30.03 inHg
Wind17.2 mph NW
Humidity35%
Visibility
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 65°0.07Climate normal
82 °Climate normal

McComas, Monday, 24 August

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0.07 in
Chance of precipitation20%
Record high92° (1995)
Record low56° (1971)
Tue, 2582° / 66°0.06Climate normal
82 °Climate normal

McComas, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high82°
Average low66°
Average precipitation0.06 in
Chance of precipitation22%
Record high94° (1968)
Record low56° (1987)
Wed, 2682° / 66°0.08Climate normal
82 °Climate normal

McComas, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high82°
Average low66°
Average precipitation0.08 in
Chance of precipitation27%
Record high92° (1975)
Record low56° (1963)
Thu, 2783° / 67°0.17Climate normal
83 °Climate normal

McComas, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high83°
Average low67°
Average precipitation0.17 in
Chance of precipitation38%
Record high92° (2020)
Record low58° (1969)
Fri, 2883° / 68°0.17Climate normal
83 °Climate normal

McComas, Friday, 28 August

Climate normal for this date — 60-year average.

Average high83°
Average low68°
Average precipitation0.17 in
Chance of precipitation47%
Record high95° (1973)
Record low57° (1968)
Sat, 2982° / 67°0.12Climate normal
82 °Climate normal

McComas, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high82°
Average low67°
Average precipitation0.12 in
Chance of precipitation32%
Record high93° (1973)
Record low51° (1982)
Sun, 3082° / 66°0.07Climate normal
82 °Climate normal

McComas, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high82°
Average low66°
Average precipitation0.07 in
Chance of precipitation28%
Record high92° (1973)
Record low49° (1986)
Mon, 3181° / 66°0.08Climate normal
81 °Climate normal

McComas, Monday, 31 August

Climate normal for this date — 60-year average.

Average high81°
Average low66°
Average precipitation0.08 in
Chance of precipitation28%
Record high93° (1973)
Record low54° (1976)
Tue, 0180° / 65°0.14Climate normal
80 °Climate normal

McComas, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high80°
Average low65°
Average precipitation0.14 in
Chance of precipitation27%
Record high93° (2010)
Record low55° (1967)
Wed, 0280° / 65°0.11Climate normal
80 °Climate normal

McComas, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high80°
Average low65°
Average precipitation0.11 in
Chance of precipitation40%
Record high93° (1980)
Record low54° (2009)
Thu, 0381° / 65°0.11Climate normal
81 °Climate normal

McComas, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high81°
Average low65°
Average precipitation0.11 in
Chance of precipitation30%
Record high96° (2023)
Record low51° (1967)
Fri, 0480° / 65°0.1Climate normal
80 °Climate normal

McComas, Friday, 4 September

Climate normal for this date — 60-year average.

Average high80°
Average low65°
Average precipitation0.1 in
Chance of precipitation32%
Record high98° (2023)
Record low54° (1997)
Sat, 0580° / 65°0.13Climate normal
80 °Climate normal

McComas, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high80°
Average low65°
Average precipitation0.13 in
Chance of precipitation30%
Record high98° (2023)
Record low54° (1997)
Sun, 0679° / 64°0.25Climate normal
79 °Climate normal

McComas, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high79°
Average low64°
Average precipitation0.25 in
Chance of precipitation33%
Record high98° (2023)
Record low53° (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 McComas, 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 McComas, 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.