Monthly outlook for Ionia, NY: average high 74.8°, average low 56°. That is 2° below the climate normal for August. Precipitation is expected on 5 days (about 0.7 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 9 August (84.3°), the coolest 24 August (47.8°).
74.8°/56°
Average high / low
−2°
Below normal
5 / 6
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
74.9°
79.1°
-2.3°
19 August – 28 August
74.6°
77.6°
-1.7°
29 August – 7 September
at normal
76.1°
—
August records over 66 years
96.4°9 August 2001All-time high
45.7°30 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Saint John Fisher College (13 mi).
Mon, 1082° / 67°0.19
82 °
Ionia, Monday, 10 August
Light rain. High 82°, low 67°.
Pressure29.94 inHg
Wind5.5 mph S
Humidity92%
Visibility6.2 mi
Dew point67°
Tue, 1179° / 63°0
79 °
Ionia, Tuesday, 11 August
Overcast. High 79°, low 63°.
Pressure29.91 inHg
Wind8.9 mph W
Humidity51%
Visibility6.2 mi
Dew point59°
Wed, 1278° / 61°0.14
78 °
Ionia, Wednesday, 12 August
Light rain. High 78°, low 61°.
Pressure29.80 inHg
Wind3.7 mph SE
Humidity47%
Visibility6.2 mi
Dew point56°
Thu, 1372° / 56°0.03
72 °
Ionia, Thursday, 13 August
Light rain. High 72°, low 56°.
Pressure29.85 inHg
Wind17.2 mph NW
Humidity48%
Visibility—
Dew point49°
Fri, 1469° / 48°0
69 °
Ionia, Friday, 14 August
Clear. High 69°, low 48°.
Pressure30.09 inHg
Wind13.6 mph NW
Humidity47%
Visibility—
Dew point46°
Sat, 1569° / 48°0
69 °
Ionia, Saturday, 15 August
Clear. High 69°, low 48°.
Pressure30.27 inHg
Wind9.1 mph NW
Humidity43%
Visibility—
Dew point44°
Sun, 1664° / 52°0
64 °
Ionia, Sunday, 16 August
Overcast. High 64°, low 52°.
Pressure30.15 inHg
Wind5.1 mph S
Humidity69%
Visibility—
Dew point52°
Mon, 1774° / 54°0
74 °
Ionia, Monday, 17 August
Mostly clear. High 74°, low 54°.
Pressure29.94 inHg
Wind9.5 mph N
Humidity47%
Visibility—
Dew point50°
Tue, 1878° / 55°0
78 °
Ionia, Tuesday, 18 August
Overcast. High 78°, low 55°.
Pressure29.94 inHg
Wind6.4 mph SW
Humidity44%
Visibility—
Dew point52°
Wed, 1983° / 62°0.08
83 °
Ionia, Wednesday, 19 August
Light rain. High 83°, low 62°.
Pressure29.71 inHg
Wind13.1 mph S
Humidity46%
Visibility—
Dew point58°
Thu, 2071° / 56°0.01
71 °
Ionia, Thursday, 20 August
Light rain. High 71°, low 56°.
Pressure29.83 inHg
Wind12.8 mph W
Humidity63%
Visibility—
Dew point53°
Fri, 2178° / 50°0
78 °
Ionia, Friday, 21 August
Overcast. High 78°, low 50°.
Pressure29.85 inHg
Wind6.8 mph SW
Humidity37%
Visibility—
Dew point46°
Sat, 2276° / 58°0.17
76 °
Ionia, Saturday, 22 August
Rain. High 76°, low 58°.
Pressure29.83 inHg
Wind11.7 mph SW
Humidity62%
Visibility—
Dew point59°
Sun, 2368° / 52°0.06
68 °
Ionia, Sunday, 23 August
Light rain. High 68°, low 52°.
Pressure29.88 inHg
Wind14.9 mph NW
Humidity78%
Visibility—
Dew point59°
Mon, 2472° / 48°0
72 °
Ionia, Monday, 24 August
Mostly clear. High 72°, low 48°.
Pressure30.21 inHg
Wind8.2 mph SW
Humidity37%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 62°0.12
78 °
Ionia, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.12 in
Chance of precipitation30%
Record high92° (2021)
Record low51° (1971)
Wed, 2679° / 62°0.06
79 °
Ionia, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.06 in
Chance of precipitation30%
Record high89° (1962)
Record low51° (2017)
Thu, 2778° / 63°0.11
78 °
Ionia, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.11 in
Chance of precipitation40%
Record high91° (2024)
Record low50° (2017)
Fri, 2878° / 63°0.16
78 °
Ionia, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.16 in
Chance of precipitation50%
Record high91° (2018)
Record low50° (2023)
Sat, 2977° / 62°0.11
77 °
Ionia, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.11 in
Chance of precipitation45%
Record high92° (2022)
Record low46° (1982)
Sun, 3077° / 62°0.08
77 °
Ionia, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.08 in
Chance of precipitation33%
Record high91° (1991)
Record low46° (1965)
Mon, 3176° / 61°0.11
76 °
Ionia, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.11 in
Chance of precipitation33%
Record high92° (1962)
Record low48° (1976)
Tue, 0176° / 60°0.06
76 °
Ionia, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.06 in
Chance of precipitation23%
Record high92° (2010)
Record low51° (2017)
Wed, 0276° / 61°0.12
76 °
Ionia, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.12 in
Chance of precipitation40%
Record high89° (2010)
Record low46° (2017)
Thu, 0376° / 61°0.09
76 °
Ionia, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.09 in
Chance of precipitation33%
Record high91° (2010)
Record low46° (1976)
Fri, 0475° / 61°0.08
75 °
Ionia, Friday, 4 September
Climate normal for this date — 60-year average.
Average high75°
Average low61°
Average precipitation0.08 in
Chance of precipitation30%
Record high91° (1973)
Record low48° (1987)
Sat, 0576° / 60°0.08
76 °
Ionia, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.08 in
Chance of precipitation28%
Record high92° (1973)
Record low49° (1974)
Sun, 0676° / 60°0.09
76 °
Ionia, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.09 in
Chance of precipitation37%
Record high91° (2007)
Record low48° (2000)
Mon, 0775° / 60°0.12
75 °
Ionia, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.12 in
Chance of precipitation40%
Record high93° (2007)
Record low46° (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 Ionia, 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 Ionia, 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.