Monthly outlook for Prospect Plains, NJ: average high 84.1°, average low 65.4°. That is 0.9° above the climate normal for August. Precipitation is expected on 5 days (about 1.5 inches), against a normal of 6 days and 2.4 inches. The warmest day looks like 10 August (95.1°), the coolest 22 August (56.9°).
84.1°/65.4°
Average high / low
+0.9°
Above normal
5 / 6
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
87°
83.3°
+2.1°
18 August – 27 August
79.2°
81.4°
-1.2°
28 August – 6 September
at normal
80.4°
—
August records over 66 years
100.6°9 August 2001All-time high
46.6°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Twin Rivers (4 mi).
Sun, 0991° / 73°0.07
91 °
Prospect Plains, Sunday, 9 August
Rain. High 91°, low 73°.
Pressure29.97 inHg
Wind9.6 mph W
Humidity43%
Visibility6.2 mi
Dew point65°
Mon, 1095° / 73°0
95 °
Prospect Plains, Monday, 10 August
Partly cloudy. High 95°, low 73°.
Pressure29.97 inHg
Wind8.7 mph W
Humidity37%
Visibility6.2 mi
Dew point62°
Tue, 1195° / 73°0
95 °
Prospect Plains, Tuesday, 11 August
Overcast. High 95°, low 73°.
Pressure29.88 inHg
Wind7.4 mph NW
Humidity45%
Visibility6.2 mi
Dew point64°
Wed, 1285° / 74°0.02
85 °
Prospect Plains, Wednesday, 12 August
Light rain. High 85°, low 74°.
Pressure29.71 inHg
Wind11.1 mph NW
Humidity56%
Visibility6.2 mi
Dew point67°
Thu, 1387° / 69°0.02
87 °
Prospect Plains, Thursday, 13 August
Light rain. High 87°, low 69°.
Pressure29.77 inHg
Wind15.4 mph W
Humidity35%
Visibility—
Dew point54°
Fri, 1480° / 59°0
80 °
Prospect Plains, Friday, 14 August
Clear. High 80°, low 59°.
Pressure30.00 inHg
Wind10.6 mph NW
Humidity29%
Visibility—
Dew point42°
Sat, 1583° / 60°0
83 °
Prospect Plains, Saturday, 15 August
Clear. High 83°, low 60°.
Pressure30.09 inHg
Wind13.1 mph NW
Humidity29%
Visibility—
Dew point44°
Sun, 1683° / 59°0
83 °
Prospect Plains, Sunday, 16 August
Mostly clear. High 83°, low 59°.
Pressure30.15 inHg
Wind8.9 mph S
Humidity24%
Visibility—
Dew point40°
Mon, 1784° / 60°0.08
84 °
Prospect Plains, Monday, 17 August
Light rain. High 84°, low 60°.
Pressure30.09 inHg
Wind10.1 mph SE
Humidity39%
Visibility—
Dew point55°
Tue, 1872° / 65°0.12
72 °
Prospect Plains, Tuesday, 18 August
Light rain. High 72°, low 65°.
Pressure30.09 inHg
Wind5.1 mph SE
Humidity75%
Visibility—
Dew point61°
Wed, 1979° / 66°0.02
79 °
Prospect Plains, Wednesday, 19 August
Light rain. High 79°, low 66°.
Pressure29.94 inHg
Wind11.2 mph S
Humidity70%
Visibility—
Dew point62°
Thu, 2081° / 67°1.14
81 °
Prospect Plains, Thursday, 20 August
Heavy rain. High 81°, low 67°.
Pressure29.62 inHg
Wind15.3 mph W
Humidity41%
Visibility—
Dew point54°
Fri, 2180° / 61°0
80 °
Prospect Plains, Friday, 21 August
Clear. High 80°, low 61°.
Pressure29.83 inHg
Wind14.1 mph NW
Humidity34%
Visibility—
Dew point46°
Sat, 2280° / 57°0
80 °
Prospect Plains, Saturday, 22 August
Clear. High 80°, low 57°.
Pressure30.03 inHg
Wind7.9 mph NW
Humidity28%
Visibility—
Dew point42°
Sun, 2383° / 61°0.01
83 °
Prospect Plains, Sunday, 23 August
Light rain. High 83°, low 61°.
Pressure30.00 inHg
Wind12.8 mph SW
Humidity54%
Visibility—
Dew point62°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2481° / 64°0.07
81 °
Prospect Plains, Monday, 24 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.07 in
Chance of precipitation22%
Record high93° (1998)
Record low52° (1971)
Tue, 2582° / 64°0.07
82 °
Prospect Plains, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.07 in
Chance of precipitation22%
Record high96° (1968)
Record low52° (1971)
Wed, 2682° / 65°0.07
82 °
Prospect Plains, 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 low54° (1960)
Thu, 2783° / 66°0.15
83 °
Prospect Plains, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.15 in
Chance of precipitation37%
Record high92° (2021)
Record low56° (1963)
Fri, 2882° / 67°0.2
82 °
Prospect Plains, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.2 in
Chance of precipitation43%
Record high96° (1973)
Record low53° (2025)
Sat, 2981° / 66°0.11
81 °
Prospect Plains, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.11 in
Chance of precipitation28%
Record high93° (2010)
Record low48° (1986)
Sun, 3082° / 65°0.08
82 °
Prospect Plains, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.08 in
Chance of precipitation28%
Record high95° (1973)
Record low47° (1986)
Mon, 3181° / 65°0.09
81 °
Prospect Plains, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.09 in
Chance of precipitation20%
Record high95° (1973)
Record low49° (1976)
Tue, 0180° / 64°0.12
80 °
Prospect Plains, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.12 in
Chance of precipitation33%
Record high94° (2010)
Record low55° (2017)
Wed, 0280° / 63°0.13
80 °
Prospect Plains, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.13 in
Chance of precipitation35%
Record high96° (1980)
Record low52° (1970)
Thu, 0380° / 64°0.1
80 °
Prospect Plains, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.1 in
Chance of precipitation32%
Record high92° (1993)
Record low48° (1967)
Fri, 0480° / 64°0.08
80 °
Prospect Plains, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.08 in
Chance of precipitation32%
Record high92° (2008)
Record low51° (2024)
Sat, 0580° / 64°0.07
80 °
Prospect Plains, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.07 in
Chance of precipitation23%
Record high94° (2023)
Record low52° (1997)
Sun, 0679° / 63°0.18
79 °
Prospect Plains, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.18 in
Chance of precipitation37%
Record high94° (2023)
Record low51° (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 Prospect Plains, NJ 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 Prospect Plains, NJ 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.