Monthly outlook for Phelps, MD: average high 84.3°, average low 67.5°. That is 0.2° above the climate normal for August. Precipitation is expected on 6 days (about 0.8 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 10 August (93.7°), the coolest 15 August (60°).
84.3°/67.5°
Average high / low
+0.2°
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
84.1°
84.7°
-0.4°
19 August – 28 August
84.7°
83.4°
+0.8°
29 August – 7 September
at normal
82.2°
—
August records over 66 years
100.6°15 August 1988All-time high
50.7°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — District Heights (1 mi).
Mon, 1094° / 74°0.16
94 °
Phelps, Monday, 10 August
Rain. High 94°, low 74°.
Pressure30.00 inHg
Wind6.1 mph NW
Humidity37%
Visibility6.2 mi
Dew point62°
Tue, 1190° / 70°0.24
90 °
Phelps, Tuesday, 11 August
Rain. High 90°, low 70°.
Pressure29.94 inHg
Wind8 mph NW
Humidity53%
Visibility6.2 mi
Dew point68°
Wed, 1291° / 73°0.08
91 °
Phelps, Wednesday, 12 August
Light rain. High 91°, low 73°.
Pressure29.80 inHg
Wind6.8 mph W
Humidity64%
Visibility6.2 mi
Dew point66°
Thu, 1386° / 72°0.02
86 °
Phelps, Thursday, 13 August
Light rain. High 86°, low 72°.
Pressure29.83 inHg
Wind13.6 mph NW
Humidity38%
Visibility—
Dew point56°
Fri, 1473° / 60°0
73 °
Phelps, Friday, 14 August
Overcast. High 73°, low 60°.
Pressure30.09 inHg
Wind7.8 mph N
Humidity43%
Visibility—
Dew point48°
Sat, 1582° / 60°0
82 °
Phelps, Saturday, 15 August
Clear. High 82°, low 60°.
Pressure30.15 inHg
Wind8.7 mph NW
Humidity31%
Visibility—
Dew point46°
Sun, 1684° / 62°0
84 °
Phelps, Sunday, 16 August
Mostly clear. High 84°, low 62°.
Pressure30.18 inHg
Wind6.2 mph SE
Humidity36%
Visibility—
Dew point51°
Mon, 1779° / 67°0.02
79 °
Phelps, Monday, 17 August
Light rain. High 79°, low 67°.
Pressure30.09 inHg
Wind10.4 mph S
Humidity62%
Visibility—
Dew point61°
Tue, 1873° / 67°0.11
73 °
Phelps, Tuesday, 18 August
Light rain. High 73°, low 67°.
Pressure30.03 inHg
Wind5.8 mph S
Humidity78%
Visibility—
Dew point65°
Wed, 1983° / 69°0
83 °
Phelps, Wednesday, 19 August
Overcast. High 83°, low 69°.
Pressure29.91 inHg
Wind7.4 mph S
Humidity74%
Visibility—
Dew point67°
Thu, 2082° / 69°0.09
82 °
Phelps, Thursday, 20 August
Light rain. High 82°, low 69°.
Pressure29.74 inHg
Wind14.9 mph NW
Humidity39%
Visibility—
Dew point53°
Fri, 2181° / 64°0
81 °
Phelps, Friday, 21 August
Clear. High 81°, low 64°.
Pressure29.91 inHg
Wind10.4 mph NW
Humidity31%
Visibility—
Dew point45°
Sat, 2284° / 60°0
84 °
Phelps, Saturday, 22 August
Mostly clear. High 84°, low 60°.
Pressure30.06 inHg
Wind6.1 mph SE
Humidity29%
Visibility—
Dew point46°
Sun, 2385° / 69°0.07
85 °
Phelps, Sunday, 23 August
Light rain. High 85°, low 69°.
Pressure29.97 inHg
Wind11.9 mph SW
Humidity85%
Visibility—
Dew point69°
Mon, 2494° / 70°0
94 °
Phelps, Monday, 24 August
Clear. High 94°, low 70°.
Pressure29.91 inHg
Wind11 mph W
Humidity37%
Visibility—
Dew point61°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2584° / 67°0.08
84 °
Phelps, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.08 in
Chance of precipitation22%
Record high97° (1968)
Record low57° (1986)
Wed, 2684° / 67°0.05
84 °
Phelps, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.05 in
Chance of precipitation17%
Record high95° (1975)
Record low57° (1963)
Thu, 2785° / 68°0.13
85 °
Phelps, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.13 in
Chance of precipitation35%
Record high96° (1987)
Record low59° (1969)
Fri, 2884° / 69°0.16
84 °
Phelps, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low69°
Average precipitation0.16 in
Chance of precipitation43%
Record high97° (1973)
Record low58° (2025)
Sat, 2984° / 68°0.11
84 °
Phelps, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.11 in
Chance of precipitation32%
Record high95° (1973)
Record low51° (1986)
Sun, 3084° / 67°0.05
84 °
Phelps, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.05 in
Chance of precipitation28%
Record high94° (1973)
Record low51° (1986)
Mon, 3183° / 67°0.07
83 °
Phelps, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.07 in
Chance of precipitation22%
Record high95° (1973)
Record low55° (1986)
Tue, 0182° / 66°0.14
82 °
Phelps, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.14 in
Chance of precipitation30%
Record high95° (1980)
Record low57° (1967)
Wed, 0282° / 66°0.09
82 °
Phelps, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.09 in
Chance of precipitation38%
Record high96° (1980)
Record low55° (1967)
Thu, 0382° / 66°0.12
82 °
Phelps, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.12 in
Chance of precipitation30%
Record high94° (2023)
Record low52° (1967)
Fri, 0482° / 67°0.09
82 °
Phelps, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.09 in
Chance of precipitation35%
Record high96° (2023)
Record low54° (2024)
Sat, 0582° / 66°0.14
82 °
Phelps, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.14 in
Chance of precipitation28%
Record high98° (2023)
Record low53° (1997)
Sun, 0681° / 65°0.22
81 °
Phelps, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.22 in
Chance of precipitation33%
Record high96° (2023)
Record low55° (2000)
Mon, 0781° / 65°0.08
81 °
Phelps, Monday, 7 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.08 in
Chance of precipitation32%
Record high93° (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 Phelps, 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 Phelps, 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.