Monthly outlook for Grass Creek, IN: average high 84.6°, average low 66°. That is 2.1° above the climate normal for August. Precipitation is expected on 6 days (about 1.9 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 23 August (98°), the coolest 14 August (55.5°).
84.6°/66°
Average high / low
+2.1°
Above normal
6 / 5
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80.7°
80.9°
-0.1°
19 August – 28 August
91°
81°
+5.6°
29 August – 7 September
at normal
79.6°
—
August records over 66 years
96.3°17 August 1988All-time high
42.8°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Winamac (13 mi).
Mon, 1093° / 72°0.52
93 °
Grass Creek, Monday, 10 August
Rain. High 93°, low 72°.
Pressure29.91 inHg
Wind12.7 mph SW
Humidity70%
Visibility6.2 mi
Dew point73°
Tue, 1187° / 68°0.76
87 °
Grass Creek, Tuesday, 11 August
Heavy rain. High 87°, low 68°.
Pressure29.88 inHg
Wind11.7 mph SW
Humidity75%
Visibility6.2 mi
Dew point75°
Wed, 1282° / 68°0.1
82 °
Grass Creek, Wednesday, 12 August
Rain. High 82°, low 68°.
Pressure29.80 inHg
Wind4.3 mph N
Humidity73%
Visibility6.2 mi
Dew point70°
Thu, 1375° / 62°0
75 °
Grass Creek, Thursday, 13 August
Overcast. High 75°, low 62°.
Pressure30.00 inHg
Wind8.8 mph N
Humidity64%
Visibility—
Dew point60°
Fri, 1474° / 56°0.11
74 °
Grass Creek, Friday, 14 August
Light rain. High 74°, low 56°.
Pressure30.15 inHg
Wind8.9 mph E
Humidity57%
Visibility—
Dew point54°
Sat, 1573° / 58°0
73 °
Grass Creek, Saturday, 15 August
Overcast. High 73°, low 58°.
Pressure30.27 inHg
Wind10 mph SE
Humidity62%
Visibility—
Dew point56°
Sun, 1677° / 60°0.11
77 °
Grass Creek, Sunday, 16 August
Light rain. High 77°, low 60°.
Pressure30.09 inHg
Wind9.8 mph SE
Humidity68%
Visibility—
Dew point61°
Mon, 1779° / 63°0.01
79 °
Grass Creek, Monday, 17 August
Light rain. High 79°, low 63°.
Pressure30.06 inHg
Wind7.2 mph N
Humidity62%
Visibility—
Dew point62°
Tue, 1881° / 65°0
81 °
Grass Creek, Tuesday, 18 August
Mostly clear. High 81°, low 65°.
Pressure30.03 inHg
Wind7.2 mph S
Humidity61%
Visibility—
Dew point64°
Wed, 1984° / 65°0.02
84 °
Grass Creek, Wednesday, 19 August
Light rain. High 84°, low 65°.
Pressure30.00 inHg
Wind13.5 mph S
Humidity65%
Visibility—
Dew point66°
Thu, 2093° / 73°0
93 °
Grass Creek, Thursday, 20 August
Overcast. High 93°, low 73°.
Pressure29.80 inHg
Wind12.8 mph SW
Humidity54%
Visibility—
Dew point70°
Fri, 2191° / 72°0
91 °
Grass Creek, Friday, 21 August
Clear. High 91°, low 72°.
Pressure29.88 inHg
Wind11.4 mph NE
Humidity56%
Visibility—
Dew point70°
Sat, 2291° / 70°0
91 °
Grass Creek, Saturday, 22 August
Clear. High 91°, low 70°.
Pressure29.91 inHg
Wind11.5 mph SE
Humidity57%
Visibility—
Dew point69°
Sun, 2398° / 72°0.03
98 °
Grass Creek, Sunday, 23 August
Light rain. High 98°, low 72°.
Pressure29.83 inHg
Wind13.5 mph S
Humidity38%
Visibility—
Dew point65°
Mon, 2489° / 69°0.24
89 °
Grass Creek, Monday, 24 August
Rain. High 89°, low 69°.
Pressure30.03 inHg
Wind7.4 mph SE
Humidity64%
Visibility—
Dew point68°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2581° / 63°0.09
81 °
Grass Creek, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high81°
Average low63°
Average precipitation0.09 in
Chance of precipitation25%
Record high94° (2020)
Record low51° (2017)
Wed, 2682° / 65°0.11
82 °
Grass Creek, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation28%
Record high94° (2020)
Record low51° (1964)
Thu, 2782° / 65°0.12
82 °
Grass Creek, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.12 in
Chance of precipitation35%
Record high94° (2024)
Record low48° (2025)
Fri, 2881° / 65°0.12
81 °
Grass Creek, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.12 in
Chance of precipitation35%
Record high93° (1991)
Record low48° (1968)
Sat, 2981° / 63°0.11
81 °
Grass Creek, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low63°
Average precipitation0.11 in
Chance of precipitation35%
Record high93° (1991)
Record low43° (1986)
Sun, 3080° / 63°0.07
80 °
Grass Creek, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.07 in
Chance of precipitation35%
Record high93° (1995)
Record low47° (1986)
Mon, 3180° / 62°0.07
80 °
Grass Creek, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.07 in
Chance of precipitation28%
Record high93° (2012)
Record low48° (2009)
Tue, 0180° / 62°0.15
80 °
Grass Creek, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.15 in
Chance of precipitation27%
Record high98° (2011)
Record low46° (1967)
Wed, 0280° / 62°0.08
80 °
Grass Creek, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.08 in
Chance of precipitation25%
Record high98° (2011)
Record low46° (1965)
Thu, 0380° / 62°0.07
80 °
Grass Creek, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.07 in
Chance of precipitation32%
Record high96° (2011)
Record low47° (1974)
Fri, 0479° / 61°0.08
79 °
Grass Creek, Friday, 4 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.08 in
Chance of precipitation23%
Record high93° (1999)
Record low47° (1997)
Sat, 0579° / 61°0.04
79 °
Grass Creek, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.04 in
Chance of precipitation22%
Record high93° (1999)
Record low47° (1974)
Sun, 0679° / 61°0.09
79 °
Grass Creek, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.09 in
Chance of precipitation32%
Record high92° (1998)
Record low47° (1962)
Mon, 0779° / 60°0.12
79 °
Grass Creek, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low60°
Average precipitation0.12 in
Chance of precipitation35%
Record high91° (2002)
Record low44° (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 Grass Creek, 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 Grass Creek, 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.