Monthly outlook for Furnace Branch, MD: average high 88.5°, average low 72°. That is 3.2° above the climate normal for August. Precipitation is expected on 5 days (about 0.6 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 21 August (96.5°), the coolest 16 August (63.8°).
88.5°/72°
Average high / low
+3.2°
Above normal
5 / 6
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
85.8°
83.4°
+1.4°
19 August – 28 August
93°
82.1°
+6.1°
29 August – 7 September
at normal
81°
—
August records over 66 years
97.3°15 August 1988All-time high
53.4°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — South Gate (4 mi).
Mon, 1089° / 74°0
89 °
Furnace Branch, Monday, 10 August
Partly cloudy. High 89°, low 74°.
Pressure30.00 inHg
Wind3.1 mph S
Humidity35%
Visibility6.2 mi
Dew point61°
Tue, 1193° / 73°0.07
93 °
Furnace Branch, Tuesday, 11 August
Rain. High 93°, low 73°.
Pressure29.91 inHg
Wind8.9 mph N
Humidity45%
Visibility6.2 mi
Dew point63°
Wed, 1292° / 75°0.05
92 °
Furnace Branch, Wednesday, 12 August
Light rain. High 92°, low 75°.
Pressure29.80 inHg
Wind10.4 mph W
Humidity52%
Visibility6.2 mi
Dew point65°
Thu, 1388° / 74°0.01
88 °
Furnace Branch, Thursday, 13 August
Light rain. High 88°, low 74°.
Pressure29.83 inHg
Wind14.1 mph NW
Humidity37%
Visibility—
Dew point56°
Fri, 1482° / 67°0
82 °
Furnace Branch, Friday, 14 August
Overcast. High 82°, low 67°.
Pressure30.03 inHg
Wind9.7 mph W
Humidity31%
Visibility—
Dew point46°
Sat, 1580° / 66°0
80 °
Furnace Branch, Saturday, 15 August
Partly cloudy. High 80°, low 66°.
Pressure30.15 inHg
Wind11.5 mph N
Humidity28%
Visibility—
Dew point42°
Sun, 1683° / 64°0
83 °
Furnace Branch, Sunday, 16 August
Overcast. High 83°, low 64°.
Pressure30.12 inHg
Wind5.3 mph N
Humidity24%
Visibility—
Dew point41°
Mon, 1777° / 70°0.26
77 °
Furnace Branch, Monday, 17 August
Rain. High 77°, low 70°.
Pressure30.00 inHg
Wind7.4 mph SE
Humidity68%
Visibility—
Dew point65°
Tue, 1885° / 69°0.02
85 °
Furnace Branch, Tuesday, 18 August
Light rain. High 85°, low 69°.
Pressure30.00 inHg
Wind7.7 mph SE
Humidity46%
Visibility—
Dew point58°
Wed, 1988° / 71°0
88 °
Furnace Branch, Wednesday, 19 August
Clear. High 88°, low 71°.
Pressure30.06 inHg
Wind6.9 mph SE
Humidity40%
Visibility—
Dew point56°
Thu, 2089° / 72°0
89 °
Furnace Branch, Thursday, 20 August
Partly cloudy. High 89°, low 72°.
Pressure30.00 inHg
Wind9.6 mph SE
Humidity41%
Visibility—
Dew point59°
Fri, 2197° / 73°0.06
97 °
Furnace Branch, Friday, 21 August
Light rain. High 97°, low 73°.
Pressure29.83 inHg
Wind10.9 mph S
Humidity40%
Visibility—
Dew point65°
Sat, 2295° / 78°0.02
95 °
Furnace Branch, Saturday, 22 August
Light rain. High 95°, low 78°.
Pressure29.88 inHg
Wind8.4 mph NE
Humidity47%
Visibility—
Dew point69°
Sun, 2394° / 77°0.02
94 °
Furnace Branch, Sunday, 23 August
Light rain. High 94°, low 77°.
Pressure29.91 inHg
Wind8.1 mph SE
Humidity35%
Visibility—
Dew point60°
Mon, 2495° / 75°0.12
95 °
Furnace Branch, Monday, 24 August
Light rain. High 95°, low 75°.
Pressure29.94 inHg
Wind7.2 mph E
Humidity44%
Visibility—
Dew point68°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 69°0.07
82 °
Furnace Branch, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.07 in
Chance of precipitation23%
Record high93° (1968)
Record low60° (1977)
Wed, 2683° / 69°0.06
83 °
Furnace Branch, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low69°
Average precipitation0.06 in
Chance of precipitation23%
Record high92° (1975)
Record low60° (1963)
Thu, 2783° / 70°0.15
83 °
Furnace Branch, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low70°
Average precipitation0.15 in
Chance of precipitation40%
Record high92° (2020)
Record low59° (2025)
Fri, 2883° / 70°0.16
83 °
Furnace Branch, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low70°
Average precipitation0.16 in
Chance of precipitation45%
Record high95° (1973)
Record low58° (2025)
Sat, 2982° / 69°0.13
82 °
Furnace Branch, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.13 in
Chance of precipitation32%
Record high92° (1973)
Record low54° (1982)
Sun, 3082° / 69°0.07
82 °
Furnace Branch, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.07 in
Chance of precipitation25%
Record high92° (2022)
Record low53° (1986)
Mon, 3182° / 69°0.09
82 °
Furnace Branch, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.09 in
Chance of precipitation30%
Record high92° (1973)
Record low57° (2025)
Tue, 0181° / 68°0.13
81 °
Furnace Branch, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low68°
Average precipitation0.13 in
Chance of precipitation28%
Record high92° (1980)
Record low58° (1967)
Wed, 0281° / 67°0.12
81 °
Furnace Branch, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0.12 in
Chance of precipitation42%
Record high92° (1980)
Record low56° (2023)
Thu, 0381° / 68°0.11
81 °
Furnace Branch, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low68°
Average precipitation0.11 in
Chance of precipitation28%
Record high95° (2023)
Record low55° (1967)
Fri, 0481° / 68°0.09
81 °
Furnace Branch, Friday, 4 September
Climate normal for this date — 60-year average.
Average high81°
Average low68°
Average precipitation0.09 in
Chance of precipitation32%
Record high97° (2023)
Record low56° (1997)
Sat, 0580° / 68°0.13
80 °
Furnace Branch, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low68°
Average precipitation0.13 in
Chance of precipitation30%
Record high98° (2023)
Record low57° (1997)
Sun, 0680° / 67°0.26
80 °
Furnace Branch, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low67°
Average precipitation0.26 in
Chance of precipitation33%
Record high98° (2023)
Record low56° (1962)
Mon, 0780° / 66°0.07
80 °
Furnace Branch, Monday, 7 September
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0.07 in
Chance of precipitation28%
Record high91° (1983)
Record low56° (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 Furnace Branch, 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 Furnace Branch, 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.