Monthly outlook for North Bellport, NY: average high 81.4°, average low 71.4°. That is 2.1° above the climate normal for August. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 9 August (89.5°), the coolest 15 August (64.2°).
81.4°/71.4°
Average high / low
+2.1°
Above normal
4 / 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
81.4°
78.3°
+1.7°
19 August – 28 August
81.5°
76.8°
+2.6°
29 August – 7 September
at normal
75.5°
—
August records over 66 years
92.3°2 August 1975All-time high
52.2°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Brookhaven (3 mi).
Mon, 1086° / 71°0
86 °
North Bellport, Monday, 10 August
Light rain. High 86°, low 71°.
Pressure30.00 inHg
Wind8 mph S
Humidity46%
Visibility6.2 mi
Dew point57°
Tue, 1188° / 74°0.04
88 °
North Bellport, Tuesday, 11 August
Light rain. High 88°, low 74°.
Pressure29.80 inHg
Wind5.9 mph NW
Humidity57%
Visibility6.2 mi
Dew point66°
Wed, 1278° / 73°0
78 °
North Bellport, Wednesday, 12 August
Light rain. High 78°, low 73°.
Pressure29.77 inHg
Wind7.8 mph SE
Humidity56%
Visibility6.2 mi
Dew point61°
Thu, 1383° / 71°0.16
83 °
North Bellport, Thursday, 13 August
Light rain. High 83°, low 71°.
Pressure29.71 inHg
Wind15 mph NW
Humidity61%
Visibility—
Dew point64°
Fri, 1476° / 65°0
76 °
North Bellport, Friday, 14 August
Clear. High 76°, low 65°.
Pressure29.97 inHg
Wind16.8 mph NW
Humidity45%
Visibility—
Dew point47°
Sat, 1579° / 64°0
79 °
North Bellport, Saturday, 15 August
Clear. High 79°, low 64°.
Pressure30.06 inHg
Wind16.1 mph NW
Humidity44%
Visibility—
Dew point46°
Sun, 1680° / 66°0
80 °
North Bellport, Sunday, 16 August
Overcast. High 80°, low 66°.
Pressure30.12 inHg
Wind10.2 mph NW
Humidity37%
Visibility—
Dew point47°
Mon, 1778° / 70°0.01
78 °
North Bellport, Monday, 17 August
Light rain. High 78°, low 70°.
Pressure30.03 inHg
Wind12.5 mph SW
Humidity52%
Visibility—
Dew point57°
Tue, 1878° / 69°0.03
78 °
North Bellport, Tuesday, 18 August
Light rain. High 78°, low 69°.
Pressure30.03 inHg
Wind11.2 mph S
Humidity52%
Visibility—
Dew point57°
Wed, 1978° / 72°0.02
78 °
North Bellport, Wednesday, 19 August
Light rain. High 78°, low 72°.
Pressure30.12 inHg
Wind10.4 mph SE
Humidity59%
Visibility—
Dew point62°
Thu, 2079° / 72°0
79 °
North Bellport, Thursday, 20 August
Mostly clear. High 79°, low 72°.
Pressure30.09 inHg
Wind11.1 mph S
Humidity66%
Visibility—
Dew point65°
Fri, 2181° / 75°0.18
81 °
North Bellport, Friday, 21 August
Rain. High 81°, low 75°.
Pressure29.94 inHg
Wind16.6 mph S
Humidity65%
Visibility—
Dew point67°
Sat, 2284° / 75°0.07
84 °
North Bellport, Saturday, 22 August
Light rain. High 84°, low 75°.
Pressure29.88 inHg
Wind15.1 mph SW
Humidity70%
Visibility—
Dew point71°
Sun, 2383° / 75°0
83 °
North Bellport, Sunday, 23 August
Clear. High 83°, low 75°.
Pressure29.94 inHg
Wind7.8 mph SW
Humidity49%
Visibility—
Dew point60°
Mon, 2483° / 77°0.07
83 °
North Bellport, Monday, 24 August
Light rain. High 83°, low 77°.
Pressure30.00 inHg
Wind13.1 mph E
Humidity67%
Visibility—
Dew point70°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2577° / 67°0.09
77 °
North Bellport, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low67°
Average precipitation0.09 in
Chance of precipitation28%
Record high89° (2020)
Record low58° (1963)
Wed, 2677° / 67°0.09
77 °
North Bellport, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high77°
Average low67°
Average precipitation0.09 in
Chance of precipitation25%
Record high87° (2021)
Record low60° (1963)
Thu, 2778° / 68°0.12
78 °
North Bellport, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low68°
Average precipitation0.12 in
Chance of precipitation28%
Record high90° (2020)
Record low59° (1969)
Fri, 2877° / 68°0.18
77 °
North Bellport, Friday, 28 August
Climate normal for this date — 60-year average.
Average high77°
Average low68°
Average precipitation0.18 in
Chance of precipitation35%
Record high87° (2024)
Record low57° (1986)
Sat, 2976° / 68°0.15
76 °
North Bellport, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high76°
Average low68°
Average precipitation0.15 in
Chance of precipitation30%
Record high86° (2018)
Record low52° (1982)
Sun, 3077° / 67°0.07
77 °
North Bellport, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low67°
Average precipitation0.07 in
Chance of precipitation27%
Record high88° (2018)
Record low55° (1965)
Mon, 3177° / 67°0.04
77 °
North Bellport, Monday, 31 August
Climate normal for this date — 60-year average.
Average high77°
Average low67°
Average precipitation0.04 in
Chance of precipitation18%
Record high89° (2010)
Record low56° (1976)
Tue, 0175° / 67°0.06
75 °
North Bellport, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high75°
Average low67°
Average precipitation0.06 in
Chance of precipitation25%
Record high87° (2010)
Record low55° (2017)
Wed, 0275° / 66°0.2
75 °
North Bellport, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high75°
Average low66°
Average precipitation0.2 in
Chance of precipitation28%
Record high87° (1966)
Record low56° (2017)
Thu, 0375° / 66°0.11
75 °
North Bellport, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high75°
Average low66°
Average precipitation0.11 in
Chance of precipitation30%
Record high84° (1973)
Record low54° (2025)
Fri, 0476° / 66°0.13
76 °
North Bellport, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low66°
Average precipitation0.13 in
Chance of precipitation22%
Record high87° (2018)
Record low56° (1997)
Sat, 0575° / 66°0.05
75 °
North Bellport, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low66°
Average precipitation0.05 in
Chance of precipitation18%
Record high90° (2023)
Record low56° (2000)
Sun, 0674° / 66°0.14
74 °
North Bellport, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high74°
Average low66°
Average precipitation0.14 in
Chance of precipitation33%
Record high90° (2023)
Record low56° (1962)
Mon, 0775° / 65°0.1
75 °
North Bellport, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low65°
Average precipitation0.1 in
Chance of precipitation32%
Record high90° (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 North Bellport, 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 North Bellport, 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.