Monthly outlook for Putnam, MD: average high 80.9°, average low 64.3°. That is 0.7° below the climate normal for August. Precipitation is expected on 7 days (about 1.3 inches), against a normal of 6 days and 2.3 inches. The warmest day looks like 8 August (89.3°), the coolest 15 August (54.6°).
80.9°/64.3°
Average high / low
−0.7°
Below normal
7 / 6
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
83.2°
82.9°
+0.2°
18 August – 27 August
77.1°
81.4°
-2.4°
28 August – 6 September
at normal
80.7°
—
August records over 66 years
97.5°15 August 1988All-time high
48.6°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Parkville (13 mi).
Sun, 0989° / 70°0
89 °
Putnam, Sunday, 9 August
Light rain. High 89°, low 70°.
Pressure30.03 inHg
Wind8.3 mph NW
Humidity51%
Visibility6.2 mi
Dew point66°
Mon, 1088° / 71°0.25
88 °
Putnam, Monday, 10 August
Heavy rain. High 88°, low 71°.
Pressure30.03 inHg
Wind10.2 mph NW
Humidity54%
Visibility6.2 mi
Dew point68°
Tue, 1188° / 68°0.19
88 °
Putnam, Tuesday, 11 August
Rain. High 88°, low 68°.
Pressure29.94 inHg
Wind8.5 mph W
Humidity60%
Visibility6.2 mi
Dew point66°
Wed, 1282° / 68°0.24
82 °
Putnam, Wednesday, 12 August
Light rain. High 82°, low 68°.
Pressure29.83 inHg
Wind8.1 mph W
Humidity74%
Visibility6.2 mi
Dew point68°
Thu, 1386° / 67°0
86 °
Putnam, Thursday, 13 August
Partly cloudy. High 86°, low 67°.
Pressure29.80 inHg
Wind11.7 mph W
Humidity46%
Visibility—
Dew point61°
Fri, 1477° / 62°0.04
77 °
Putnam, Friday, 14 August
Light rain. High 77°, low 62°.
Pressure29.97 inHg
Wind9.8 mph N
Humidity47%
Visibility—
Dew point53°
Sat, 1575° / 55°0
75 °
Putnam, Saturday, 15 August
Clear. High 75°, low 55°.
Pressure30.21 inHg
Wind9.6 mph N
Humidity41%
Visibility—
Dew point47°
Sun, 1676° / 56°0
76 °
Putnam, Sunday, 16 August
Clear. High 76°, low 56°.
Pressure30.30 inHg
Wind6.7 mph N
Humidity40%
Visibility—
Dew point47°
Mon, 1782° / 59°0
82 °
Putnam, Monday, 17 August
Mostly clear. High 82°, low 59°.
Pressure30.12 inHg
Wind9.7 mph S
Humidity50%
Visibility—
Dew point59°
Tue, 1874° / 69°0.17
74 °
Putnam, Tuesday, 18 August
Light rain. High 74°, low 69°.
Pressure29.97 inHg
Wind8.5 mph SW
Humidity94%
Visibility—
Dew point69°
Wed, 1983° / 66°0.01
83 °
Putnam, Wednesday, 19 August
Light rain. High 83°, low 66°.
Pressure29.88 inHg
Wind10.6 mph N
Humidity47%
Visibility—
Dew point58°
Thu, 2076° / 61°0
76 °
Putnam, Thursday, 20 August
Overcast. High 76°, low 61°.
Pressure30.00 inHg
Wind6.4 mph N
Humidity47%
Visibility—
Dew point52°
Fri, 2173° / 63°0.33
73 °
Putnam, Friday, 21 August
Rain. High 73°, low 63°.
Pressure29.88 inHg
Wind11 mph S
Humidity96%
Visibility—
Dew point69°
Sat, 2284° / 68°0
84 °
Putnam, Saturday, 22 August
Mostly clear. High 84°, low 68°.
Pressure29.77 inHg
Wind8.9 mph NW
Humidity49%
Visibility—
Dew point60°
Sun, 2373° / 57°0
73 °
Putnam, Sunday, 23 August
Clear. High 73°, low 57°.
Pressure30.06 inHg
Wind16.2 mph NW
Humidity34%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 65°0.07
82 °
Putnam, Monday, 24 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.07 in
Chance of precipitation20%
Record high92° (1995)
Record low56° (1971)
Tue, 2582° / 66°0.06
82 °
Putnam, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.06 in
Chance of precipitation22%
Record high94° (1968)
Record low56° (1987)
Wed, 2682° / 66°0.08
82 °
Putnam, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.08 in
Chance of precipitation27%
Record high92° (1975)
Record low56° (1963)
Thu, 2783° / 67°0.17
83 °
Putnam, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.17 in
Chance of precipitation38%
Record high92° (2020)
Record low58° (1969)
Fri, 2883° / 68°0.17
83 °
Putnam, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.17 in
Chance of precipitation47%
Record high95° (1973)
Record low57° (1968)
Sat, 2982° / 67°0.12
82 °
Putnam, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.12 in
Chance of precipitation32%
Record high93° (1973)
Record low51° (1982)
Sun, 3082° / 66°0.07
82 °
Putnam, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.07 in
Chance of precipitation28%
Record high92° (1973)
Record low49° (1986)
Mon, 3181° / 66°0.08
81 °
Putnam, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.08 in
Chance of precipitation28%
Record high93° (1973)
Record low54° (1976)
Tue, 0180° / 65°0.14
80 °
Putnam, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.14 in
Chance of precipitation27%
Record high93° (2010)
Record low55° (1967)
Wed, 0280° / 65°0.11
80 °
Putnam, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.11 in
Chance of precipitation40%
Record high93° (1980)
Record low54° (2009)
Thu, 0381° / 65°0.11
81 °
Putnam, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.11 in
Chance of precipitation30%
Record high96° (2023)
Record low51° (1967)
Fri, 0480° / 65°0.1
80 °
Putnam, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.1 in
Chance of precipitation32%
Record high98° (2023)
Record low54° (1997)
Sat, 0580° / 65°0.13
80 °
Putnam, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.13 in
Chance of precipitation30%
Record high98° (2023)
Record low54° (1997)
Sun, 0679° / 64°0.25
79 °
Putnam, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.25 in
Chance of precipitation33%
Record high98° (2023)
Record low53° (2000)
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 Putnam, 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 Putnam, 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.