Monthly outlook for Radnor, IN: average high 79.2°, average low 63.4°. That is 1.3° below the climate normal for August. Precipitation is expected on 8 days (about 1.6 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 9 August (90.9°), the coolest 23 August (46.3°).
79.2°/63.4°
Average high / low
−1.3°
Below normal
8 / 5
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
80.1°
81.6°
-0.8°
18 August – 27 August
77.8°
81.8°
-2.2°
28 August – 6 September
at normal
80.5°
—
August records over 66 years
100.8°17 August 1988All-time high
44.2°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Lafayette (14 mi).
Sun, 0991° / 69°0.34
91 °
Radnor, Sunday, 9 August
Heavy rain. High 91°, low 69°.
Pressure30.00 inHg
Wind12.2 mph SW
Humidity80%
Visibility6.2 mi
Dew point75°
Mon, 1087° / 74°0.05
87 °
Radnor, Monday, 10 August
Light rain. High 87°, low 74°.
Pressure29.97 inHg
Wind11.9 mph W
Humidity83%
Visibility6.2 mi
Dew point74°
Tue, 1188° / 74°0.17
88 °
Radnor, Tuesday, 11 August
Light rain. High 88°, low 74°.
Pressure29.88 inHg
Wind12 mph SW
Humidity76%
Visibility6.2 mi
Dew point75°
Wed, 1282° / 68°0.15
82 °
Radnor, Wednesday, 12 August
Rain. High 82°, low 68°.
Pressure29.83 inHg
Wind4.4 mph NE
Humidity81%
Visibility6.2 mi
Dew point73°
Thu, 1376° / 64°0.16
76 °
Radnor, Thursday, 13 August
Light rain. High 76°, low 64°.
Pressure29.88 inHg
Wind12.1 mph NE
Humidity87%
Visibility—
Dew point70°
Fri, 1471° / 53°0
71 °
Radnor, Friday, 14 August
Clear. High 71°, low 53°.
Pressure30.18 inHg
Wind11.1 mph N
Humidity61%
Visibility—
Dew point54°
Sat, 1573° / 52°0
73 °
Radnor, Saturday, 15 August
Overcast. High 73°, low 52°.
Pressure30.33 inHg
Wind6.9 mph SE
Humidity62%
Visibility—
Dew point56°
Sun, 1676° / 57°0
76 °
Radnor, Sunday, 16 August
Mostly clear. High 76°, low 57°.
Pressure30.24 inHg
Wind8.2 mph S
Humidity65%
Visibility—
Dew point60°
Mon, 1771° / 64°0.23
71 °
Radnor, Monday, 17 August
Light rain. High 71°, low 64°.
Pressure30.03 inHg
Wind9.9 mph S
Humidity87%
Visibility—
Dew point66°
Tue, 1881° / 69°0.03
81 °
Radnor, Tuesday, 18 August
Light rain. High 81°, low 69°.
Pressure29.97 inHg
Wind9.5 mph NE
Humidity76%
Visibility—
Dew point71°
Wed, 1982° / 66°0
82 °
Radnor, Wednesday, 19 August
Overcast. High 82°, low 66°.
Pressure29.94 inHg
Wind7.9 mph S
Humidity70%
Visibility—
Dew point68°
Thu, 2078° / 67°0.35
78 °
Radnor, Thursday, 20 August
Rain. High 78°, low 67°.
Pressure29.85 inHg
Wind7 mph N
Humidity82%
Visibility—
Dew point71°
Fri, 2179° / 63°0.01
79 °
Radnor, Friday, 21 August
Light rain. High 79°, low 63°.
Pressure29.94 inHg
Wind8.2 mph NE
Humidity67%
Visibility—
Dew point64°
Sat, 2280° / 59°0.06
80 °
Radnor, Saturday, 22 August
Light rain. High 80°, low 59°.
Pressure29.91 inHg
Wind14.2 mph N
Humidity64%
Visibility—
Dew point64°
Sun, 2367° / 46°0
67 °
Radnor, Sunday, 23 August
Clear. High 67°, low 46°.
Pressure30.21 inHg
Wind11.6 mph NE
Humidity54%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 65°0.06
82 °
Radnor, Monday, 24 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.06 in
Chance of precipitation25%
Record high95° (2011)
Record low52° (1987)
Tue, 2582° / 64°0.09
82 °
Radnor, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.09 in
Chance of precipitation27%
Record high94° (2020)
Record low53° (2017)
Wed, 2682° / 65°0.11
82 °
Radnor, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation32%
Record high92° (2020)
Record low53° (1964)
Thu, 2782° / 66°0.13
82 °
Radnor, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.13 in
Chance of precipitation28%
Record high94° (2024)
Record low51° (1968)
Fri, 2882° / 66°0.15
82 °
Radnor, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.15 in
Chance of precipitation37%
Record high92° (1990)
Record low50° (1986)
Sat, 2982° / 64°0.11
82 °
Radnor, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.11 in
Chance of precipitation32%
Record high91° (1991)
Record low44° (1986)
Sun, 3080° / 64°0.06
80 °
Radnor, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.06 in
Chance of precipitation32%
Record high93° (1995)
Record low50° (1986)
Mon, 3181° / 63°0.07
81 °
Radnor, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low63°
Average precipitation0.07 in
Chance of precipitation28%
Record high93° (2011)
Record low49° (2009)
Tue, 0181° / 63°0.09
81 °
Radnor, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low63°
Average precipitation0.09 in
Chance of precipitation18%
Record high99° (2011)
Record low48° (1967)
Wed, 0281° / 64°0.08
81 °
Radnor, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation30%
Record high99° (2011)
Record low48° (1965)
Thu, 0381° / 64°0.08
81 °
Radnor, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation30%
Record high96° (2011)
Record low48° (1974)
Fri, 0480° / 62°0.08
80 °
Radnor, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.08 in
Chance of precipitation22%
Record high94° (1999)
Record low47° (1974)
Sat, 0580° / 62°0.03
80 °
Radnor, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.03 in
Chance of precipitation17%
Record high94° (1999)
Record low49° (1974)
Sun, 0680° / 62°0.06
80 °
Radnor, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.06 in
Chance of precipitation30%
Record high92° (1990)
Record low47° (1962)
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 Radnor, 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 Radnor, 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.