Monthly outlook for Lower Melville, NY: average high 85.6°, average low 72.3°. That is 4.5° above the climate normal for August. Precipitation is expected on 5 days (about 0.6 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 22 August (93.8°), the coolest 15 August (63.9°).
85.6°/72.3°
Average high / low
+4.5°
Above normal
5 / 5
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
84.2°
78.2°
+3.3°
19 August – 28 August
88.1°
76.8°
+6.3°
29 August – 7 September
at normal
75.6°
—
August records over 66 years
92.3°27 August 2020All-time high
52.7°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Farmingdale (3 mi).
Mon, 1086° / 72°0
86 °
Lower Melville, Monday, 10 August
Light rain. High 86°, low 72°.
Pressure30.00 inHg
Wind8.1 mph S
Humidity34%
Visibility6.2 mi
Dew point56°
Tue, 1191° / 75°0.03
91 °
Lower Melville, Tuesday, 11 August
Light rain. High 91°, low 75°.
Pressure29.83 inHg
Wind11.1 mph NW
Humidity47%
Visibility6.2 mi
Dew point63°
Wed, 1284° / 76°0
84 °
Lower Melville, Wednesday, 12 August
Overcast. High 84°, low 76°.
Pressure29.74 inHg
Wind9.1 mph SE
Humidity52%
Visibility6.2 mi
Dew point61°
Thu, 1385° / 72°0.11
85 °
Lower Melville, Thursday, 13 August
Light rain. High 85°, low 72°.
Pressure29.71 inHg
Wind16.4 mph NW
Humidity48%
Visibility—
Dew point59°
Fri, 1478° / 66°0
78 °
Lower Melville, Friday, 14 August
Clear. High 78°, low 66°.
Pressure29.97 inHg
Wind17.3 mph NW
Humidity37%
Visibility—
Dew point43°
Sat, 1580° / 64°0
80 °
Lower Melville, Saturday, 15 August
Clear. High 80°, low 64°.
Pressure30.09 inHg
Wind14.2 mph N
Humidity38%
Visibility—
Dew point43°
Sun, 1681° / 67°0
81 °
Lower Melville, Sunday, 16 August
Overcast. High 81°, low 67°.
Pressure30.12 inHg
Wind9.2 mph N
Humidity32%
Visibility—
Dew point43°
Mon, 1782° / 71°0.07
82 °
Lower Melville, Monday, 17 August
Light rain. High 82°, low 71°.
Pressure30.03 inHg
Wind11.7 mph S
Humidity39%
Visibility—
Dew point51°
Tue, 1884° / 69°0
84 °
Lower Melville, Tuesday, 18 August
Clear. High 84°, low 69°.
Pressure30.03 inHg
Wind9.9 mph S
Humidity42%
Visibility—
Dew point53°
Wed, 1983° / 73°0
83 °
Lower Melville, Wednesday, 19 August
Overcast. High 83°, low 73°.
Pressure30.12 inHg
Wind10.1 mph SE
Humidity46%
Visibility—
Dew point58°
Thu, 2085° / 73°0
85 °
Lower Melville, Thursday, 20 August
Clear. High 85°, low 73°.
Pressure30.06 inHg
Wind9.9 mph S
Humidity50%
Visibility—
Dew point61°
Fri, 2186° / 75°0.11
86 °
Lower Melville, Friday, 21 August
Light rain. High 86°, low 75°.
Pressure29.91 inHg
Wind16.3 mph S
Humidity52%
Visibility—
Dew point62°
Sat, 2294° / 75°0.07
94 °
Lower Melville, Saturday, 22 August
Light rain. High 94°, low 75°.
Pressure29.88 inHg
Wind9.2 mph SW
Humidity48%
Visibility—
Dew point64°
Sun, 2392° / 77°0
92 °
Lower Melville, Sunday, 23 August
Clear. High 92°, low 77°.
Pressure29.94 inHg
Wind8.1 mph S
Humidity37%
Visibility—
Dew point56°
Mon, 2490° / 78°0.24
90 °
Lower Melville, Monday, 24 August
Rain. High 90°, low 78°.
Pressure29.97 inHg
Wind9.1 mph E
Humidity59%
Visibility—
Dew point69°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2577° / 67°0.09
77 °
Lower Melville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low67°
Average precipitation0.09 in
Chance of precipitation23%
Record high91° (2020)
Record low58° (1963)
Wed, 2677° / 68°0.07
77 °
Lower Melville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high77°
Average low68°
Average precipitation0.07 in
Chance of precipitation23%
Record high89° (2021)
Record low61° (1960)
Thu, 2778° / 68°0.13
78 °
Lower Melville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low68°
Average precipitation0.13 in
Chance of precipitation33%
Record high92° (2020)
Record low59° (2019)
Fri, 2877° / 68°0.19
77 °
Lower Melville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high77°
Average low68°
Average precipitation0.19 in
Chance of precipitation42%
Record high91° (2024)
Record low57° (2025)
Sat, 2976° / 68°0.14
76 °
Lower Melville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high76°
Average low68°
Average precipitation0.14 in
Chance of precipitation32%
Record high89° (2018)
Record low53° (1982)
Sun, 3077° / 67°0.08
77 °
Lower Melville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low67°
Average precipitation0.08 in
Chance of precipitation28%
Record high88° (2018)
Record low55° (1965)
Mon, 3176° / 67°0.05
76 °
Lower Melville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low67°
Average precipitation0.05 in
Chance of precipitation20%
Record high88° (2010)
Record low56° (1976)
Tue, 0175° / 67°0.07
75 °
Lower Melville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high75°
Average low67°
Average precipitation0.07 in
Chance of precipitation28%
Record high86° (1973)
Record low54° (2017)
Wed, 0275° / 66°0.15
75 °
Lower Melville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high75°
Average low66°
Average precipitation0.15 in
Chance of precipitation30%
Record high86° (1966)
Record low54° (2017)
Thu, 0376° / 66°0.11
76 °
Lower Melville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low66°
Average precipitation0.11 in
Chance of precipitation30%
Record high87° (2023)
Record low56° (2024)
Fri, 0476° / 67°0.12
76 °
Lower Melville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low67°
Average precipitation0.12 in
Chance of precipitation25%
Record high90° (2018)
Record low55° (2024)
Sat, 0575° / 66°0.05
75 °
Lower Melville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low66°
Average precipitation0.05 in
Chance of precipitation17%
Record high93° (2023)
Record low56° (2024)
Sun, 0675° / 66°0.17
75 °
Lower Melville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low66°
Average precipitation0.17 in
Chance of precipitation38%
Record high92° (2023)
Record low56° (1962)
Mon, 0775° / 66°0.09
75 °
Lower Melville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low66°
Average precipitation0.09 in
Chance of precipitation35%
Record high92° (2023)
Record low56° (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 Lower Melville, NY 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 Lower Melville, NY 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.