Monthly outlook for Montgomery Square, MD: average high 84°, average low 68°. That is 0.3° above the climate normal for August. Precipitation is expected on 7 days (about 0.7 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 10 August (93.1°), the coolest 22 August (60.7°).
84°/68°
Average high / low
+0.3°
Above normal
7 / 6
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
84.1°
84.2°
-0°
19 August – 28 August
83.9°
82.9°
+0.6°
29 August – 7 September
at normal
81.7°
—
August records over 66 years
99.9°17 August 1988All-time high
49.3°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Aspen Hill (5 mi).
Mon, 1093° / 74°0.07
93 °
Montgomery Square, Monday, 10 August
Light rain. High 93°, low 74°.
Pressure30.00 inHg
Wind6.3 mph NW
Humidity43%
Visibility6.2 mi
Dew point64°
Tue, 1190° / 69°0.19
90 °
Montgomery Square, Tuesday, 11 August
Rain. High 90°, low 69°.
Pressure29.94 inHg
Wind7.7 mph NW
Humidity50%
Visibility6.2 mi
Dew point65°
Wed, 1293° / 73°0.09
93 °
Montgomery Square, Wednesday, 12 August
Light rain. High 93°, low 73°.
Pressure29.77 inHg
Wind5.6 mph W
Humidity60%
Visibility6.2 mi
Dew point66°
Thu, 1384° / 71°0.04
84 °
Montgomery Square, Thursday, 13 August
Light rain. High 84°, low 71°.
Pressure29.85 inHg
Wind12.2 mph NW
Humidity34%
Visibility—
Dew point51°
Fri, 1472° / 63°0
72 °
Montgomery Square, Friday, 14 August
Overcast. High 72°, low 63°.
Pressure30.09 inHg
Wind7.1 mph NW
Humidity46%
Visibility—
Dew point48°
Sat, 1583° / 61°0
83 °
Montgomery Square, Saturday, 15 August
Clear. High 83°, low 61°.
Pressure30.15 inHg
Wind8.5 mph N
Humidity30%
Visibility—
Dew point45°
Sun, 1686° / 64°0
86 °
Montgomery Square, Sunday, 16 August
Mostly clear. High 86°, low 64°.
Pressure30.15 inHg
Wind7.6 mph SE
Humidity30%
Visibility—
Dew point48°
Mon, 1777° / 69°0.03
77 °
Montgomery Square, Monday, 17 August
Light rain. High 77°, low 69°.
Pressure30.09 inHg
Wind13.4 mph S
Humidity64%
Visibility—
Dew point61°
Tue, 1875° / 67°0.08
75 °
Montgomery Square, Tuesday, 18 August
Light rain. High 75°, low 67°.
Pressure30.03 inHg
Wind5.6 mph S
Humidity73%
Visibility—
Dew point65°
Wed, 1982° / 70°0.02
82 °
Montgomery Square, Wednesday, 19 August
Light rain. High 82°, low 70°.
Pressure29.88 inHg
Wind8.9 mph S
Humidity60%
Visibility—
Dew point65°
Thu, 2081° / 69°0.11
81 °
Montgomery Square, Thursday, 20 August
Light rain. High 81°, low 69°.
Pressure29.74 inHg
Wind15.1 mph NW
Humidity38%
Visibility—
Dew point52°
Fri, 2182° / 62°0
82 °
Montgomery Square, Friday, 21 August
Clear. High 82°, low 62°.
Pressure29.91 inHg
Wind10.3 mph NW
Humidity30%
Visibility—
Dew point44°
Sat, 2284° / 61°0
84 °
Montgomery Square, Saturday, 22 August
Mostly clear. High 84°, low 61°.
Pressure30.06 inHg
Wind6.4 mph SE
Humidity29%
Visibility—
Dew point45°
Sun, 2382° / 70°0.07
82 °
Montgomery Square, Sunday, 23 August
Light rain. High 82°, low 70°.
Pressure29.94 inHg
Wind11.6 mph SW
Humidity74%
Visibility—
Dew point68°
Mon, 2492° / 72°0
92 °
Montgomery Square, Monday, 24 August
Clear. High 92°, low 72°.
Pressure29.91 inHg
Wind13.4 mph NW
Humidity36%
Visibility—
Dew point59°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2583° / 66°0.07
83 °
Montgomery Square, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.07 in
Chance of precipitation23%
Record high96° (1968)
Record low55° (1971)
Wed, 2684° / 66°0.06
84 °
Montgomery Square, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.06 in
Chance of precipitation23%
Record high94° (1975)
Record low56° (1963)
Thu, 2784° / 67°0.14
84 °
Montgomery Square, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.14 in
Chance of precipitation38%
Record high95° (1987)
Record low58° (1969)
Fri, 2884° / 68°0.17
84 °
Montgomery Square, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.17 in
Chance of precipitation45%
Record high96° (1973)
Record low57° (1969)
Sat, 2983° / 67°0.12
83 °
Montgomery Square, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.12 in
Chance of precipitation30%
Record high96° (1973)
Record low51° (1986)
Sun, 3083° / 66°0.06
83 °
Montgomery Square, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.06 in
Chance of precipitation25%
Record high94° (1973)
Record low49° (1986)
Mon, 3182° / 66°0.07
82 °
Montgomery Square, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.07 in
Chance of precipitation25%
Record high96° (1973)
Record low54° (1976)
Tue, 0181° / 65°0.14
81 °
Montgomery Square, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.14 in
Chance of precipitation27%
Record high96° (1973)
Record low55° (1967)
Wed, 0282° / 65°0.12
82 °
Montgomery Square, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.12 in
Chance of precipitation40%
Record high95° (1980)
Record low54° (1967)
Thu, 0382° / 65°0.11
82 °
Montgomery Square, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation32%
Record high96° (2023)
Record low51° (1967)
Fri, 0482° / 65°0.09
82 °
Montgomery Square, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation33%
Record high97° (2023)
Record low54° (1997)
Sat, 0581° / 65°0.13
81 °
Montgomery Square, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.13 in
Chance of precipitation30%
Record high99° (2023)
Record low53° (1997)
Sun, 0680° / 64°0.24
80 °
Montgomery Square, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.24 in
Chance of precipitation30%
Record high98° (2023)
Record low53° (2000)
Mon, 0781° / 64°0.07
81 °
Montgomery Square, Monday, 7 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.07 in
Chance of precipitation25%
Record high92° (1998)
Record low52° (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 Montgomery Square, 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 Montgomery Square, 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.