Monthly outlook for Forest Lake, MD: average high 82.1°, average low 63.7°. That is 0.1° above the climate normal for August. Precipitation is expected on 2 days (about 0.7 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 11 August (88.5°), the coolest 16 August (54.2°).
82.1°/63.7°
Average high / low
+0.1°
Above normal
2 / 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
80.7°
82.5°
-1°
19 August – 28 August
84.4°
81.3°
+1.7°
29 August – 7 September
at normal
80.2°
—
August records over 66 years
96.3°15 August 1988All-time high
52.5°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Joppatowne (10 mi).
Mon, 1085° / 71°0.01
85 °
Forest Lake, Monday, 10 August
Light rain. High 85°, low 71°.
Pressure29.97 inHg
Wind7 mph SW
Humidity39%
Visibility6.2 mi
Dew point63°
Tue, 1189° / 68°0.04
89 °
Forest Lake, Tuesday, 11 August
Light rain. High 89°, low 68°.
Pressure29.91 inHg
Wind12.1 mph NW
Humidity54%
Visibility6.2 mi
Dew point65°
Wed, 1285° / 69°0.02
85 °
Forest Lake, Wednesday, 12 August
Light rain. High 85°, low 69°.
Pressure29.83 inHg
Wind4.8 mph NW
Humidity55%
Visibility6.2 mi
Dew point64°
Thu, 1383° / 70°0
83 °
Forest Lake, Thursday, 13 August
Overcast. High 83°, low 70°.
Pressure29.85 inHg
Wind16.1 mph NW
Humidity34%
Visibility—
Dew point50°
Fri, 1469° / 59°0
69 °
Forest Lake, Friday, 14 August
Overcast. High 69°, low 59°.
Pressure30.06 inHg
Wind7 mph NW
Humidity52%
Visibility—
Dew point49°
Sat, 1575° / 56°0
75 °
Forest Lake, Saturday, 15 August
Overcast. High 75°, low 56°.
Pressure30.21 inHg
Wind12.1 mph N
Humidity36%
Visibility—
Dew point44°
Sun, 1675° / 54°0.01
75 °
Forest Lake, Sunday, 16 August
Light rain. High 75°, low 54°.
Pressure30.18 inHg
Wind6.2 mph N
Humidity54%
Visibility—
Dew point51°
Mon, 1778° / 63°0.02
78 °
Forest Lake, Monday, 17 August
Light rain. High 78°, low 63°.
Pressure29.91 inHg
Wind9.8 mph N
Humidity59%
Visibility—
Dew point61°
Tue, 1882° / 59°0
82 °
Forest Lake, Tuesday, 18 August
Partly cloudy. High 82°, low 59°.
Pressure29.97 inHg
Wind7 mph NE
Humidity35%
Visibility—
Dew point49°
Wed, 1983° / 66°0.65
83 °
Forest Lake, Wednesday, 19 August
Rain. High 83°, low 66°.
Pressure29.83 inHg
Wind15.3 mph S
Humidity54%
Visibility—
Dew point63°
Thu, 2084° / 65°0
84 °
Forest Lake, Thursday, 20 August
Partly cloudy. High 84°, low 65°.
Pressure29.74 inHg
Wind12.1 mph NW
Humidity44%
Visibility—
Dew point58°
Fri, 2183° / 58°0
83 °
Forest Lake, Friday, 21 August
Partly cloudy. High 83°, low 58°.
Pressure29.88 inHg
Wind6.3 mph N
Humidity37%
Visibility—
Dew point51°
Sat, 2288° / 63°0
88 °
Forest Lake, Saturday, 22 August
Clear. High 88°, low 63°.
Pressure29.91 inHg
Wind14.2 mph S
Humidity45%
Visibility—
Dew point60°
Sun, 2387° / 70°0
87 °
Forest Lake, Sunday, 23 August
Clear. High 87°, low 70°.
Pressure29.88 inHg
Wind15.7 mph W
Humidity34%
Visibility—
Dew point54°
Mon, 2481° / 57°0
81 °
Forest Lake, Monday, 24 August
Clear. High 81°, low 57°.
Pressure30.15 inHg
Wind7.8 mph N
Humidity30%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 68°0.06
82 °
Forest Lake, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low68°
Average precipitation0.06 in
Chance of precipitation13%
Record high93° (1968)
Record low59° (1963)
Wed, 2682° / 68°0.07
82 °
Forest Lake, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low68°
Average precipitation0.07 in
Chance of precipitation22%
Record high91° (1975)
Record low58° (1963)
Thu, 2782° / 69°0.16
82 °
Forest Lake, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.16 in
Chance of precipitation37%
Record high91° (2020)
Record low59° (2025)
Fri, 2882° / 69°0.16
82 °
Forest Lake, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.16 in
Chance of precipitation38%
Record high95° (1973)
Record low56° (2025)
Sat, 2982° / 69°0.11
82 °
Forest Lake, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.11 in
Chance of precipitation30%
Record high92° (1973)
Record low53° (1982)
Sun, 3082° / 68°0.06
82 °
Forest Lake, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low68°
Average precipitation0.06 in
Chance of precipitation22%
Record high92° (1973)
Record low54° (1986)
Mon, 3181° / 68°0.07
81 °
Forest Lake, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low68°
Average precipitation0.07 in
Chance of precipitation25%
Record high92° (1973)
Record low56° (1976)
Tue, 0180° / 67°0.14
80 °
Forest Lake, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low67°
Average precipitation0.14 in
Chance of precipitation22%
Record high91° (1973)
Record low56° (1967)
Wed, 0280° / 67°0.1
80 °
Forest Lake, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low67°
Average precipitation0.1 in
Chance of precipitation35%
Record high91° (1980)
Record low57° (1967)
Thu, 0380° / 67°0.1
80 °
Forest Lake, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low67°
Average precipitation0.1 in
Chance of precipitation27%
Record high90° (1993)
Record low53° (1967)
Fri, 0480° / 67°0.09
80 °
Forest Lake, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low67°
Average precipitation0.09 in
Chance of precipitation27%
Record high95° (2023)
Record low55° (1997)
Sat, 0579° / 67°0.1
79 °
Forest Lake, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low67°
Average precipitation0.1 in
Chance of precipitation27%
Record high96° (2023)
Record low56° (1997)
Sun, 0679° / 66°0.24
79 °
Forest Lake, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low66°
Average precipitation0.24 in
Chance of precipitation35%
Record high94° (2023)
Record low55° (1962)
Mon, 0779° / 65°0.09
79 °
Forest Lake, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low65°
Average precipitation0.09 in
Chance of precipitation32%
Record high90° (1983)
Record low55° (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 Forest Lake, 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 Forest Lake, 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.