Monthly outlook for Argonne Hills, MD: average high 90.4°, average low 70.3°. That is 3.8° above the climate normal for August. Precipitation is expected on 6 days (about 0.8 inches), against a normal of 6 days and 2.4 inches. The warmest day looks like 23 August (101.9°), the coolest 16 August (61.6°).
90.4°/70.3°
Average high / low
+3.8°
Above normal
6 / 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
86.2°
84.3°
+1.1°
19 August – 28 August
97.3°
82.9°
+8°
29 August – 7 September
at normal
81.7°
—
August records over 66 years
99.7°17 August 1988All-time high
49.3°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Laurel (5 mi).
Mon, 1090° / 73°0
90 °
Argonne Hills, Monday, 10 August
Partly cloudy. High 90°, low 73°.
Pressure30.00 inHg
Wind4.7 mph W
Humidity33%
Visibility6.2 mi
Dew point60°
Tue, 1193° / 71°0.09
93 °
Argonne Hills, Tuesday, 11 August
Rain. High 93°, low 71°.
Pressure29.91 inHg
Wind9.7 mph NW
Humidity45%
Visibility6.2 mi
Dew point63°
Wed, 1292° / 73°0.07
92 °
Argonne Hills, Wednesday, 12 August
Light rain. High 92°, low 73°.
Pressure29.80 inHg
Wind10.1 mph W
Humidity52%
Visibility6.2 mi
Dew point64°
Thu, 1388° / 72°0.02
88 °
Argonne Hills, Thursday, 13 August
Light rain. High 88°, low 72°.
Pressure29.83 inHg
Wind13.2 mph NW
Humidity36%
Visibility—
Dew point55°
Fri, 1482° / 65°0
82 °
Argonne Hills, Friday, 14 August
Overcast. High 82°, low 65°.
Pressure30.06 inHg
Wind8.1 mph W
Humidity32%
Visibility—
Dew point46°
Sat, 1580° / 63°0
80 °
Argonne Hills, Saturday, 15 August
Overcast. High 80°, low 63°.
Pressure30.15 inHg
Wind10.8 mph NW
Humidity26%
Visibility—
Dew point40°
Sun, 1684° / 62°0
84 °
Argonne Hills, Sunday, 16 August
Overcast. High 84°, low 62°.
Pressure30.12 inHg
Wind4.5 mph NW
Humidity22%
Visibility—
Dew point39°
Mon, 1779° / 68°0.21
79 °
Argonne Hills, Monday, 17 August
Light rain. High 79°, low 68°.
Pressure29.97 inHg
Wind5.8 mph SE
Humidity57%
Visibility—
Dew point62°
Tue, 1886° / 67°0.03
86 °
Argonne Hills, Tuesday, 18 August
Light rain. High 86°, low 67°.
Pressure30.00 inHg
Wind6.2 mph E
Humidity38%
Visibility—
Dew point55°
Wed, 1988° / 68°0
88 °
Argonne Hills, Wednesday, 19 August
Clear. High 88°, low 68°.
Pressure30.06 inHg
Wind8 mph E
Humidity33%
Visibility—
Dew point54°
Thu, 2093° / 69°0
93 °
Argonne Hills, Thursday, 20 August
Partly cloudy. High 93°, low 69°.
Pressure30.00 inHg
Wind7.4 mph SE
Humidity34%
Visibility—
Dew point57°
Fri, 21102° / 72°0.07
102 °
Argonne Hills, Friday, 21 August
Light rain. High 102°, low 72°.
Pressure29.83 inHg
Wind8.8 mph S
Humidity33%
Visibility—
Dew point62°
Sat, 2298° / 77°0.05
98 °
Argonne Hills, Saturday, 22 August
Light rain. High 98°, low 77°.
Pressure29.88 inHg
Wind7.7 mph N
Humidity41%
Visibility—
Dew point67°
Sun, 23102° / 76°0.04
102 °
Argonne Hills, Sunday, 23 August
Light rain. High 102°, low 76°.
Pressure29.91 inHg
Wind6.9 mph SW
Humidity30%
Visibility—
Dew point60°
Mon, 24101° / 74°0.26
101 °
Argonne Hills, Monday, 24 August
Rain. High 101°, low 74°.
Pressure29.94 inHg
Wind7.5 mph S
Humidity38%
Visibility—
Dew point66°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2583° / 67°0.06
83 °
Argonne Hills, 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 low56° (1971)
Wed, 2684° / 67°0.05
84 °
Argonne Hills, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.05 in
Chance of precipitation22%
Record high94° (1975)
Record low58° (1963)
Thu, 2784° / 68°0.16
84 °
Argonne Hills, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.16 in
Chance of precipitation40%
Record high95° (1987)
Record low58° (2025)
Fri, 2884° / 68°0.18
84 °
Argonne Hills, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.18 in
Chance of precipitation50%
Record high96° (1973)
Record low58° (1969)
Sat, 2983° / 68°0.12
83 °
Argonne Hills, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.12 in
Chance of precipitation32%
Record high95° (1973)
Record low52° (1986)
Sun, 3083° / 67°0.09
83 °
Argonne Hills, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.09 in
Chance of precipitation25%
Record high94° (1973)
Record low49° (1986)
Mon, 3182° / 67°0.09
82 °
Argonne Hills, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.09 in
Chance of precipitation27%
Record high95° (1973)
Record low55° (1986)
Tue, 0181° / 66°0.16
81 °
Argonne Hills, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.16 in
Chance of precipitation32%
Record high95° (1973)
Record low56° (1967)
Wed, 0282° / 65°0.13
82 °
Argonne Hills, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.13 in
Chance of precipitation43%
Record high95° (1980)
Record low55° (1963)
Thu, 0382° / 66°0.12
82 °
Argonne Hills, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.12 in
Chance of precipitation27%
Record high95° (2023)
Record low52° (1967)
Fri, 0482° / 66°0.09
82 °
Argonne Hills, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.09 in
Chance of precipitation33%
Record high96° (2023)
Record low55° (1997)
Sat, 0581° / 66°0.14
81 °
Argonne Hills, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.14 in
Chance of precipitation30%
Record high98° (2023)
Record low54° (1997)
Sun, 0681° / 65°0.24
81 °
Argonne Hills, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.24 in
Chance of precipitation38%
Record high98° (2023)
Record low55° (2000)
Mon, 0781° / 65°0.07
81 °
Argonne Hills, Monday, 7 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.07 in
Chance of precipitation27%
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 Argonne Hills, 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 Argonne Hills, 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.