Monthly outlook for New Boston, IN: average high 90.2°, average low 71.6°. That is 2.6° above the climate normal for August. Precipitation is expected on 5 days (about 2.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 21 August (99°), the coolest 15 August (65°).
90.2°/71.6°
Average high / low
+2.6°
Above normal
5 / 5
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
86.8°
85.5°
+0.7°
19 August – 28 August
95.9°
85.8°
+5.6°
29 August – 7 September
at normal
84°
—
August records over 66 years
103.5°15 August 2007All-time high
52.3°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Tell City (8 mi).
Mon, 1094° / 75°0
94 °
New Boston, Monday, 10 August
Clear. High 94°, low 75°.
Pressure30.03 inHg
Wind12.6 mph SW
Humidity60%
Visibility6.2 mi
Dew point73°
Tue, 1193° / 75°0
93 °
New Boston, Tuesday, 11 August
Overcast. High 93°, low 75°.
Pressure29.94 inHg
Wind12.6 mph SW
Humidity58%
Visibility6.2 mi
Dew point73°
Wed, 1291° / 72°0.97
91 °
New Boston, Wednesday, 12 August
Heavy rain. High 91°, low 72°.
Pressure29.83 inHg
Wind12.5 mph SW
Humidity62%
Visibility6.2 mi
Dew point73°
Thu, 1387° / 69°0.57
87 °
New Boston, Thursday, 13 August
Rain. High 87°, low 69°.
Pressure29.94 inHg
Wind13.6 mph NE
Humidity67%
Visibility—
Dew point71°
Fri, 1478° / 66°0.32
78 °
New Boston, Friday, 14 August
Rain. High 78°, low 66°.
Pressure30.06 inHg
Wind14.1 mph E
Humidity84%
Visibility—
Dew point66°
Sat, 1576° / 65°0.17
76 °
New Boston, Saturday, 15 August
Light rain. High 76°, low 65°.
Pressure30.18 inHg
Wind10.3 mph E
Humidity81%
Visibility—
Dew point68°
Sun, 1685° / 66°0
85 °
New Boston, Sunday, 16 August
Overcast. High 85°, low 66°.
Pressure30.03 inHg
Wind7.8 mph E
Humidity69%
Visibility—
Dew point72°
Mon, 1785° / 69°0
85 °
New Boston, Monday, 17 August
Clear. High 85°, low 69°.
Pressure30.03 inHg
Wind6.3 mph NE
Humidity62%
Visibility—
Dew point68°
Tue, 1887° / 68°0
87 °
New Boston, Tuesday, 18 August
Clear. High 87°, low 68°.
Pressure30.00 inHg
Wind7.3 mph E
Humidity58%
Visibility—
Dew point67°
Wed, 1986° / 68°0.04
86 °
New Boston, Wednesday, 19 August
Light rain. High 86°, low 68°.
Pressure30.03 inHg
Wind7.2 mph SE
Humidity60%
Visibility—
Dew point68°
Thu, 2098° / 75°0
98 °
New Boston, Thursday, 20 August
Overcast. High 98°, low 75°.
Pressure29.91 inHg
Wind7.5 mph SW
Humidity64%
Visibility—
Dew point73°
Fri, 2199° / 78°0
99 °
New Boston, Friday, 21 August
Partly cloudy. High 99°, low 78°.
Pressure29.85 inHg
Wind9.3 mph W
Humidity43%
Visibility—
Dew point68°
Sat, 2298° / 76°0
98 °
New Boston, Saturday, 22 August
Clear. High 98°, low 76°.
Pressure29.91 inHg
Wind5.6 mph SE
Humidity54%
Visibility—
Dew point74°
Sun, 2398° / 78°0
98 °
New Boston, Sunday, 23 August
Partly cloudy. High 98°, low 78°.
Pressure29.91 inHg
Wind7.2 mph W
Humidity46%
Visibility—
Dew point70°
Mon, 2496° / 75°0.02
96 °
New Boston, Monday, 24 August
Light rain. High 96°, low 75°.
Pressure29.97 inHg
Wind4.9 mph NW
Humidity48%
Visibility—
Dew point69°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2586° / 69°0.07
86 °
New Boston, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.07 in
Chance of precipitation23%
Record high98° (2023)
Record low59° (2025)
Wed, 2686° / 69°0.08
86 °
New Boston, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.08 in
Chance of precipitation27%
Record high97° (1983)
Record low56° (2025)
Thu, 2786° / 70°0.09
86 °
New Boston, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high86°
Average low70°
Average precipitation0.09 in
Chance of precipitation35%
Record high95° (2024)
Record low55° (2025)
Fri, 2886° / 69°0.12
86 °
New Boston, Friday, 28 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.12 in
Chance of precipitation30%
Record high97° (2007)
Record low57° (1986)
Sat, 2985° / 69°0.13
85 °
New Boston, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.13 in
Chance of precipitation35%
Record high98° (2024)
Record low52° (1986)
Sun, 3085° / 69°0.15
85 °
New Boston, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.15 in
Chance of precipitation30%
Record high95° (2012)
Record low54° (1986)
Mon, 3185° / 68°0.1
85 °
New Boston, Monday, 31 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.1 in
Chance of precipitation40%
Record high95° (1995)
Record low58° (2009)
Tue, 0184° / 68°0.12
84 °
New Boston, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.12 in
Chance of precipitation32%
Record high98° (2011)
Record low54° (1967)
Wed, 0284° / 68°0.16
84 °
New Boston, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.16 in
Chance of precipitation30%
Record high98° (2011)
Record low54° (2017)
Thu, 0384° / 68°0.1
84 °
New Boston, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.1 in
Chance of precipitation28%
Record high100° (2011)
Record low55° (1974)
Fri, 0483° / 67°0.07
83 °
New Boston, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.07 in
Chance of precipitation28%
Record high97° (1999)
Record low54° (1974)
Sat, 0583° / 67°0.12
83 °
New Boston, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.12 in
Chance of precipitation28%
Record high97° (1999)
Record low54° (1974)
Sun, 0683° / 66°0.03
83 °
New Boston, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.03 in
Chance of precipitation17%
Record high97° (1998)
Record low55° (2017)
Mon, 0783° / 66°0.03
83 °
New Boston, Monday, 7 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.03 in
Chance of precipitation17%
Record high97° (1960)
Record low52° (1988)
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 New Boston, IN 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 New Boston, IN 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.