Monthly outlook for Northampton, PA: average high 82.5°, average low 67.2°. That is 0.1° above the climate normal for August. Precipitation is expected on 3 days (about 1.5 inches), against a normal of 6 days and 2.3 inches. The warmest day looks like 10 August (91.9°), the coolest 22 August (59.1°).
82.5°/67.2°
Average high / low
+0.1°
Above normal
3 / 6
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
83.3°
83.1°
+0.1°
19 August – 28 August
81.1°
81.6°
-0.3°
29 August – 7 September
at normal
80.2°
—
August records over 66 years
99.7°9 August 2001All-time high
46.9°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Trevose (4 mi).
Mon, 1092° / 72°0
92 °
Northampton, Monday, 10 August
Partly cloudy. High 92°, low 72°.
Pressure29.97 inHg
Wind7.3 mph W
Humidity39%
Visibility6.2 mi
Dew point61°
Tue, 1192° / 74°0
92 °
Northampton, Tuesday, 11 August
Overcast. High 92°, low 74°.
Pressure29.88 inHg
Wind4.6 mph NW
Humidity50%
Visibility6.2 mi
Dew point67°
Wed, 1283° / 75°0
83 °
Northampton, Wednesday, 12 August
Overcast. High 83°, low 75°.
Pressure29.71 inHg
Wind10.8 mph NW
Humidity56%
Visibility6.2 mi
Dew point66°
Thu, 1385° / 70°0
85 °
Northampton, Thursday, 13 August
Clear. High 85°, low 70°.
Pressure29.77 inHg
Wind12.4 mph NW
Humidity35%
Visibility—
Dew point53°
Fri, 1479° / 62°0
79 °
Northampton, Friday, 14 August
Clear. High 79°, low 62°.
Pressure30.00 inHg
Wind8.3 mph NW
Humidity30%
Visibility—
Dew point43°
Sat, 1581° / 64°0
81 °
Northampton, Saturday, 15 August
Clear. High 81°, low 64°.
Pressure30.12 inHg
Wind10.7 mph NW
Humidity31%
Visibility—
Dew point45°
Sun, 1682° / 62°0
82 °
Northampton, Sunday, 16 August
Overcast. High 82°, low 62°.
Pressure30.18 inHg
Wind5.6 mph N
Humidity29%
Visibility—
Dew point44°
Mon, 1781° / 66°0.04
81 °
Northampton, Monday, 17 August
Light rain. High 81°, low 66°.
Pressure30.09 inHg
Wind9.4 mph S
Humidity47%
Visibility—
Dew point57°
Tue, 1869° / 65°0.15
69 °
Northampton, Tuesday, 18 August
Light rain. High 69°, low 65°.
Pressure30.09 inHg
Wind6.5 mph SE
Humidity87%
Visibility—
Dew point63°
Wed, 1978° / 67°0.02
78 °
Northampton, Wednesday, 19 August
Light rain. High 78°, low 67°.
Pressure29.94 inHg
Wind9.8 mph S
Humidity62%
Visibility—
Dew point62°
Thu, 2080° / 68°1.24
80 °
Northampton, Thursday, 20 August
Heavy rain. High 80°, low 68°.
Pressure29.65 inHg
Wind12.9 mph W
Humidity43%
Visibility—
Dew point54°
Fri, 2179° / 62°0
79 °
Northampton, Friday, 21 August
Clear. High 79°, low 62°.
Pressure29.85 inHg
Wind11.6 mph NW
Humidity33%
Visibility—
Dew point45°
Sat, 2279° / 59°0
79 °
Northampton, Saturday, 22 August
Clear. High 79°, low 59°.
Pressure30.06 inHg
Wind5.7 mph W
Humidity30%
Visibility—
Dew point42°
Sun, 2384° / 65°0
84 °
Northampton, Sunday, 23 August
Overcast. High 84°, low 65°.
Pressure29.97 inHg
Wind10.8 mph S
Humidity55%
Visibility—
Dew point62°
Mon, 2487° / 71°0.01
87 °
Northampton, Monday, 24 August
Light rain. High 87°, low 71°.
Pressure29.88 inHg
Wind10.5 mph W
Humidity37%
Visibility—
Dew point56°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 65°0.07
82 °
Northampton, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.07 in
Chance of precipitation17%
Record high96° (1968)
Record low53° (1987)
Wed, 2682° / 65°0.07
82 °
Northampton, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.07 in
Chance of precipitation23%
Record high92° (1993)
Record low55° (1963)
Thu, 2783° / 66°0.18
83 °
Northampton, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.18 in
Chance of precipitation35%
Record high92° (1993)
Record low56° (1963)
Fri, 2882° / 67°0.23
82 °
Northampton, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.23 in
Chance of precipitation42%
Record high95° (2024)
Record low56° (1986)
Sat, 2981° / 66°0.13
81 °
Northampton, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.13 in
Chance of precipitation30%
Record high94° (2010)
Record low49° (1982)
Sun, 3082° / 65°0.06
82 °
Northampton, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.06 in
Chance of precipitation33%
Record high94° (1973)
Record low47° (1986)
Mon, 3181° / 65°0.08
81 °
Northampton, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.08 in
Chance of precipitation20%
Record high96° (2010)
Record low51° (1976)
Tue, 0180° / 64°0.13
80 °
Northampton, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation30%
Record high94° (2010)
Record low55° (1967)
Wed, 0280° / 64°0.13
80 °
Northampton, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation35%
Record high94° (2010)
Record low53° (1970)
Thu, 0380° / 64°0.15
80 °
Northampton, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.15 in
Chance of precipitation32%
Record high93° (2015)
Record low49° (1967)
Fri, 0480° / 64°0.1
80 °
Northampton, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.1 in
Chance of precipitation28%
Record high96° (2023)
Record low52° (1997)
Sat, 0580° / 64°0.07
80 °
Northampton, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.07 in
Chance of precipitation28%
Record high95° (2023)
Record low53° (1997)
Sun, 0679° / 63°0.21
79 °
Northampton, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.21 in
Chance of precipitation35%
Record high95° (2023)
Record low51° (1984)
Mon, 0780° / 62°0.11
80 °
Northampton, Monday, 7 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.11 in
Chance of precipitation28%
Record high91° (1998)
Record low48° (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 Northampton, PA 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 Northampton, PA 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.