Monthly outlook for Lake Osiris Colony, NY: average high 80.3°, average low 58.9°. That is 0.1° below the climate normal for August. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 11 August (87.7°), the coolest 16 August (51.3°).
80.3°/58.9°
Average high / low
−0.1°
Below normal
3 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
79°
81.2°
-1.2°
19 August – 28 August
82.3°
79.4°
+1.6°
29 August – 7 September
at normal
77.7°
—
August records over 66 years
99°2 August 1975All-time high
46.4°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Poughkeepsie (15 mi).
Mon, 1084° / 67°0.01
84 °
Lake Osiris Colony, Monday, 10 August
Light rain. High 84°, low 67°.
Pressure29.97 inHg
Wind7.7 mph SW
Humidity46%
Visibility6.2 mi
Dew point62°
Tue, 1188° / 66°0.02
88 °
Lake Osiris Colony, Tuesday, 11 August
Light rain. High 88°, low 66°.
Pressure29.85 inHg
Wind8.4 mph NW
Humidity41%
Visibility6.2 mi
Dew point58°
Wed, 1283° / 58°0.01
83 °
Lake Osiris Colony, Wednesday, 12 August
Light rain. High 83°, low 58°.
Pressure29.83 inHg
Wind2.7 mph S
Humidity45%
Visibility6.2 mi
Dew point57°
Thu, 1381° / 60°0.01
81 °
Lake Osiris Colony, Thursday, 13 August
Light rain. High 81°, low 60°.
Pressure29.74 inHg
Wind14.9 mph NW
Humidity35%
Visibility—
Dew point49°
Fri, 1476° / 54°0
76 °
Lake Osiris Colony, Friday, 14 August
Clear. High 76°, low 54°.
Pressure29.97 inHg
Wind10.8 mph NW
Humidity34%
Visibility—
Dew point44°
Sat, 1576° / 51°0
76 °
Lake Osiris Colony, Saturday, 15 August
Clear. High 76°, low 51°.
Pressure30.12 inHg
Wind9.3 mph N
Humidity33%
Visibility—
Dew point43°
Sun, 1673° / 51°0
73 °
Lake Osiris Colony, Sunday, 16 August
Overcast. High 73°, low 51°.
Pressure30.15 inHg
Wind2.3 mph S
Humidity43%
Visibility—
Dew point47°
Mon, 1763° / 59°0.17
63 °
Lake Osiris Colony, Monday, 17 August
Light rain. High 63°, low 59°.
Pressure29.94 inHg
Wind6.7 mph N
Humidity99%
Visibility—
Dew point60°
Tue, 1883° / 54°0
83 °
Lake Osiris Colony, Tuesday, 18 August
Overcast. High 83°, low 54°.
Pressure29.94 inHg
Wind3 mph SE
Humidity39%
Visibility—
Dew point53°
Wed, 1982° / 62°0.02
82 °
Lake Osiris Colony, Wednesday, 19 August
Light rain. High 82°, low 62°.
Pressure29.85 inHg
Wind10.4 mph S
Humidity45%
Visibility—
Dew point56°
Thu, 2081° / 59°0.09
81 °
Lake Osiris Colony, Thursday, 20 August
Light rain. High 81°, low 59°.
Pressure29.71 inHg
Wind12.2 mph W
Humidity45%
Visibility—
Dew point56°
Fri, 2182° / 56°0
82 °
Lake Osiris Colony, Friday, 21 August
Clear. High 82°, low 56°.
Pressure29.85 inHg
Wind4 mph S
Humidity41%
Visibility—
Dew point52°
Sat, 2287° / 56°0
87 °
Lake Osiris Colony, Saturday, 22 August
Clear. High 87°, low 56°.
Pressure29.94 inHg
Wind11.8 mph SW
Humidity39%
Visibility—
Dew point49°
Sun, 2383° / 64°0.54
83 °
Lake Osiris Colony, Sunday, 23 August
Rain. High 83°, low 64°.
Pressure29.77 inHg
Wind16.8 mph W
Humidity53%
Visibility—
Dew point61°
Mon, 2478° / 53°0
78 °
Lake Osiris Colony, Monday, 24 August
Clear. High 78°, low 53°.
Pressure30.18 inHg
Wind4.5 mph N
Humidity47%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 62°0.08
80 °
Lake Osiris Colony, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.08 in
Chance of precipitation27%
Record high94° (2020)
Record low50° (1971)
Wed, 2680° / 62°0.07
80 °
Lake Osiris Colony, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.07 in
Chance of precipitation22%
Record high91° (1993)
Record low50° (1963)
Thu, 2780° / 63°0.18
80 °
Lake Osiris Colony, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.18 in
Chance of precipitation38%
Record high94° (1993)
Record low53° (1969)
Fri, 2880° / 63°0.24
80 °
Lake Osiris Colony, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.24 in
Chance of precipitation33%
Record high93° (1993)
Record low52° (2025)
Sat, 2979° / 63°0.15
79 °
Lake Osiris Colony, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.15 in
Chance of precipitation32%
Record high91° (2018)
Record low47° (1982)
Sun, 3079° / 62°0.09
79 °
Lake Osiris Colony, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.09 in
Chance of precipitation23%
Record high93° (1973)
Record low46° (1986)
Mon, 3178° / 62°0.06
78 °
Lake Osiris Colony, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.06 in
Chance of precipitation27%
Record high93° (2012)
Record low47° (1976)
Tue, 0177° / 61°0.12
77 °
Lake Osiris Colony, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.12 in
Chance of precipitation23%
Record high93° (2010)
Record low51° (2017)
Wed, 0278° / 60°0.14
78 °
Lake Osiris Colony, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.14 in
Chance of precipitation28%
Record high94° (2010)
Record low48° (2017)
Thu, 0378° / 60°0.1
78 °
Lake Osiris Colony, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.1 in
Chance of precipitation33%
Record high91° (1973)
Record low47° (1967)
Fri, 0478° / 61°0.12
78 °
Lake Osiris Colony, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.12 in
Chance of precipitation25%
Record high92° (1973)
Record low49° (1987)
Sat, 0577° / 61°0.08
77 °
Lake Osiris Colony, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.08 in
Chance of precipitation27%
Record high92° (2018)
Record low49° (1997)
Sun, 0677° / 60°0.21
77 °
Lake Osiris Colony, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.21 in
Chance of precipitation27%
Record high92° (2018)
Record low47° (1984)
Mon, 0777° / 60°0.13
77 °
Lake Osiris Colony, Monday, 7 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.13 in
Chance of precipitation35%
Record high93° (2023)
Record low45° (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 Lake Osiris Colony, 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 Lake Osiris Colony, 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.