Monthly outlook for Oak Forest, MD: average high 88.9°, average low 70.6°. That is 3.1° above the climate normal for August. Precipitation is expected on 5 days (about 0.8 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 23 August (99.8°), the coolest 16 August (62.3°).
88.9°/70.6°
Average high / low
+3.1°
Above normal
5 / 6
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
84.8°
84°
+0.5°
19 August – 28 August
95.6°
82.7°
+7.1°
29 August – 7 September
at normal
81.6°
—
August records over 66 years
100°17 August 1988All-time high
51.6°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Columbia (7 mi).
Mon, 1087° / 72°0
87 °
Oak Forest, Monday, 10 August
Partly cloudy. High 87°, low 72°.
Pressure30.00 inHg
Wind4.6 mph W
Humidity32%
Visibility6.2 mi
Dew point59°
Tue, 1192° / 71°0.1
92 °
Oak Forest, Tuesday, 11 August
Rain. High 92°, low 71°.
Pressure29.91 inHg
Wind9.7 mph NW
Humidity46%
Visibility6.2 mi
Dew point63°
Wed, 1291° / 73°0.06
91 °
Oak Forest, Wednesday, 12 August
Light rain. High 91°, low 73°.
Pressure29.80 inHg
Wind9.8 mph W
Humidity53%
Visibility6.2 mi
Dew point64°
Thu, 1386° / 72°0
86 °
Oak Forest, Thursday, 13 August
Light rain. High 86°, low 72°.
Pressure29.83 inHg
Wind12.7 mph NW
Humidity35%
Visibility—
Dew point53°
Fri, 1481° / 65°0
81 °
Oak Forest, Friday, 14 August
Overcast. High 81°, low 65°.
Pressure30.06 inHg
Wind8.8 mph W
Humidity32%
Visibility—
Dew point45°
Sat, 1579° / 64°0
79 °
Oak Forest, Saturday, 15 August
Partly cloudy. High 79°, low 64°.
Pressure30.15 inHg
Wind10.6 mph N
Humidity27%
Visibility—
Dew point40°
Sun, 1683° / 62°0
83 °
Oak Forest, Sunday, 16 August
Overcast. High 83°, low 62°.
Pressure30.12 inHg
Wind6.2 mph W
Humidity21%
Visibility—
Dew point37°
Mon, 1778° / 68°0.28
78 °
Oak Forest, Monday, 17 August
Rain. High 78°, low 68°.
Pressure29.97 inHg
Wind6.5 mph SE
Humidity58%
Visibility—
Dew point61°
Tue, 1884° / 67°0.02
84 °
Oak Forest, Tuesday, 18 August
Light rain. High 84°, low 67°.
Pressure30.00 inHg
Wind5.4 mph E
Humidity38%
Visibility—
Dew point54°
Wed, 1988° / 69°0
88 °
Oak Forest, Wednesday, 19 August
Clear. High 88°, low 69°.
Pressure30.06 inHg
Wind6.9 mph SE
Humidity34%
Visibility—
Dew point53°
Thu, 2092° / 70°0
92 °
Oak Forest, Thursday, 20 August
Partly cloudy. High 92°, low 70°.
Pressure30.00 inHg
Wind7.1 mph SE
Humidity34%
Visibility—
Dew point56°
Fri, 21100° / 73°0.08
100 °
Oak Forest, Friday, 21 August
Light rain. High 100°, low 73°.
Pressure29.83 inHg
Wind7.9 mph SW
Humidity34%
Visibility—
Dew point61°
Sat, 2296° / 78°0.03
96 °
Oak Forest, Saturday, 22 August
Light rain. High 96°, low 78°.
Pressure29.88 inHg
Wind8.1 mph N
Humidity41%
Visibility—
Dew point65°
Sun, 23100° / 77°0.02
100 °
Oak Forest, Sunday, 23 August
Light rain. High 100°, low 77°.
Pressure29.91 inHg
Wind7.5 mph SW
Humidity29%
Visibility—
Dew point58°
Mon, 2499° / 74°0.24
99 °
Oak Forest, Monday, 24 August
Rain. High 99°, low 74°.
Pressure29.94 inHg
Wind8.1 mph E
Humidity39%
Visibility—
Dew point66°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2583° / 67°0.06
83 °
Oak Forest, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.06 in
Chance of precipitation22%
Record high96° (1968)
Record low57° (1971)
Wed, 2684° / 67°0.06
84 °
Oak Forest, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.06 in
Chance of precipitation23%
Record high94° (1975)
Record low58° (1963)
Thu, 2784° / 68°0.15
84 °
Oak Forest, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.15 in
Chance of precipitation42%
Record high95° (1987)
Record low58° (2025)
Fri, 2884° / 68°0.17
84 °
Oak Forest, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.17 in
Chance of precipitation47%
Record high97° (1973)
Record low58° (2025)
Sat, 2983° / 68°0.13
83 °
Oak Forest, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.13 in
Chance of precipitation32%
Record high95° (1973)
Record low52° (1982)
Sun, 3083° / 67°0.08
83 °
Oak Forest, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.08 in
Chance of precipitation25%
Record high94° (1973)
Record low52° (1986)
Mon, 3182° / 67°0.08
82 °
Oak Forest, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.08 in
Chance of precipitation27%
Record high95° (1973)
Record low55° (1986)
Tue, 0181° / 66°0.15
81 °
Oak Forest, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.15 in
Chance of precipitation28%
Record high95° (1973)
Record low55° (1967)
Wed, 0281° / 65°0.13
81 °
Oak Forest, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.13 in
Chance of precipitation42%
Record high95° (1980)
Record low55° (1967)
Thu, 0382° / 66°0.11
82 °
Oak Forest, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.11 in
Chance of precipitation30%
Record high95° (2023)
Record low52° (1967)
Fri, 0482° / 66°0.09
82 °
Oak Forest, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.09 in
Chance of precipitation33%
Record high97° (2023)
Record low54° (1997)
Sat, 0581° / 66°0.14
81 °
Oak Forest, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.14 in
Chance of precipitation32%
Record high98° (2023)
Record low54° (1997)
Sun, 0680° / 65°0.25
80 °
Oak Forest, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.25 in
Chance of precipitation33%
Record high98° (2023)
Record low54° (2000)
Mon, 0781° / 64°0.07
81 °
Oak Forest, Monday, 7 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.07 in
Chance of precipitation27%
Record high92° (1998)
Record low53° (1988)
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 Oak Forest, 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 Oak Forest, 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.