Monthly outlook for Unionville, MD: average high 86.2°, average low 71.8°. That is 1.7° above the climate normal for August. Precipitation is expected on 5 days (about 0.9 inches), against a normal of 6 days and 2.5 inches. The warmest day looks like 24 August (95.3°), the coolest 16 August (59.9°).
86.2°/71.8°
Average high / low
+1.7°
Above normal
5 / 6
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
83.6°
83.7°
-0°
19 August – 28 August
90.5°
82.5°
+4.4°
29 August – 7 September
at normal
81.5°
—
August records over 66 years
96.4°20 August 1983All-time high
52.2°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Princess Anne (11 mi).
Mon, 1091° / 76°0
91 °
Unionville, Monday, 10 August
Partly cloudy. High 91°, low 76°.
Pressure30.00 inHg
Wind8.3 mph W
Humidity51%
Visibility6.2 mi
Dew point69°
Tue, 1190° / 76°0
90 °
Unionville, Tuesday, 11 August
Partly cloudy. High 90°, low 76°.
Pressure29.91 inHg
Wind14.2 mph NW
Humidity50%
Visibility6.2 mi
Dew point66°
Wed, 1286° / 77°0.02
86 °
Unionville, Wednesday, 12 August
Light rain. High 86°, low 77°.
Pressure29.83 inHg
Wind12 mph W
Humidity55%
Visibility6.2 mi
Dew point68°
Thu, 1387° / 74°0.33
87 °
Unionville, Thursday, 13 August
Rain. High 87°, low 74°.
Pressure29.80 inHg
Wind16.9 mph SW
Humidity48%
Visibility—
Dew point64°
Fri, 1479° / 65°0
79 °
Unionville, Friday, 14 August
Overcast. High 79°, low 65°.
Pressure30.06 inHg
Wind7.7 mph N
Humidity38%
Visibility—
Dew point50°
Sat, 1579° / 63°0
79 °
Unionville, Saturday, 15 August
Overcast. High 79°, low 63°.
Pressure30.15 inHg
Wind11.7 mph NW
Humidity38%
Visibility—
Dew point49°
Sun, 1681° / 60°0
81 °
Unionville, Sunday, 16 August
Partly cloudy. High 81°, low 60°.
Pressure30.12 inHg
Wind6.5 mph N
Humidity30%
Visibility—
Dew point45°
Mon, 1773° / 69°0.05
73 °
Unionville, Monday, 17 August
Light rain. High 73°, low 69°.
Pressure30.00 inHg
Wind9 mph SE
Humidity81%
Visibility—
Dew point65°
Tue, 1880° / 70°0.21
80 °
Unionville, Tuesday, 18 August
Light rain. High 80°, low 70°.
Pressure30.00 inHg
Wind8.5 mph E
Humidity68%
Visibility—
Dew point67°
Wed, 1986° / 69°0
86 °
Unionville, Wednesday, 19 August
Clear. High 86°, low 69°.
Pressure30.06 inHg
Wind9.5 mph E
Humidity48%
Visibility—
Dew point62°
Thu, 2087° / 68°0
87 °
Unionville, Thursday, 20 August
Clear. High 87°, low 68°.
Pressure30.03 inHg
Wind7.6 mph S
Humidity45%
Visibility—
Dew point61°
Fri, 2190° / 73°0.09
90 °
Unionville, Friday, 21 August
Light rain. High 90°, low 73°.
Pressure29.91 inHg
Wind15 mph S
Humidity50%
Visibility—
Dew point67°
Sat, 2291° / 77°0.16
91 °
Unionville, Saturday, 22 August
Light rain. High 91°, low 77°.
Pressure29.88 inHg
Wind11.2 mph S
Humidity58%
Visibility—
Dew point73°
Sun, 2393° / 77°0
93 °
Unionville, Sunday, 23 August
Clear. High 93°, low 77°.
Pressure29.91 inHg
Wind8 mph S
Humidity52%
Visibility—
Dew point71°
Mon, 2495° / 79°0
95 °
Unionville, Monday, 24 August
Light rain. High 95°, low 79°.
Pressure29.97 inHg
Wind15.2 mph NW
Humidity48%
Visibility—
Dew point71°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2583° / 69°0.06
83 °
Unionville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low69°
Average precipitation0.06 in
Chance of precipitation20%
Record high94° (1968)
Record low59° (2024)
Wed, 2683° / 70°0.05
83 °
Unionville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low70°
Average precipitation0.05 in
Chance of precipitation22%
Record high92° (1975)
Record low60° (1977)
Thu, 2783° / 71°0.13
83 °
Unionville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low71°
Average precipitation0.13 in
Chance of precipitation30%
Record high94° (1987)
Record low62° (2025)
Fri, 2883° / 71°0.17
83 °
Unionville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low71°
Average precipitation0.17 in
Chance of precipitation38%
Record high92° (1987)
Record low59° (2025)
Sat, 2983° / 71°0.11
83 °
Unionville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low71°
Average precipitation0.11 in
Chance of precipitation32%
Record high92° (1973)
Record low55° (1986)
Sun, 3083° / 70°0.08
83 °
Unionville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low70°
Average precipitation0.08 in
Chance of precipitation27%
Record high92° (2010)
Record low52° (1986)
Mon, 3182° / 70°0.08
82 °
Unionville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low70°
Average precipitation0.08 in
Chance of precipitation27%
Record high92° (2010)
Record low55° (1986)
Tue, 0181° / 69°0.24
81 °
Unionville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low69°
Average precipitation0.24 in
Chance of precipitation35%
Record high92° (2010)
Record low58° (1986)
Wed, 0281° / 68°0.09
81 °
Unionville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low68°
Average precipitation0.09 in
Chance of precipitation40%
Record high92° (1980)
Record low58° (2023)
Thu, 0382° / 69°0.11
82 °
Unionville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.11 in
Chance of precipitation40%
Record high91° (1984)
Record low54° (1967)
Fri, 0482° / 69°0.14
82 °
Unionville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.14 in
Chance of precipitation30%
Record high91° (2008)
Record low57° (1997)
Sat, 0581° / 69°0.09
81 °
Unionville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low69°
Average precipitation0.09 in
Chance of precipitation33%
Record high94° (2023)
Record low57° (1997)
Sun, 0681° / 68°0.2
81 °
Unionville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high81°
Average low68°
Average precipitation0.2 in
Chance of precipitation37%
Record high95° (2023)
Record low59° (1982)
Mon, 0781° / 67°0.07
81 °
Unionville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0.07 in
Chance of precipitation25%
Record high94° (2023)
Record low56° (1984)
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 Unionville, 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 Unionville, 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.