Monthly outlook for Delmar, MO: average high 93.5°, average low 71.2°. That is 3.3° above the climate normal for August. Precipitation is expected on 6 days (about 0.9 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 11 August (105.4°), the coolest 21 August (63.7°).
93.5°/71.2°
Average high / low
+3.3°
Above normal
6 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
95°
87.5°
+4.2°
18 August – 27 August
91.1°
87.9°
+1.8°
28 August – 6 September
at normal
85.4°
—
August records over 66 years
108.1°2 August 2011All-time high
54.9°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Brownington (14 mi).
Sun, 0994° / 77°0
94 °
Delmar, Sunday, 9 August
Overcast. High 94°, low 77°.
Pressure29.91 inHg
Wind14.2 mph S
Humidity46%
Visibility6.2 mi
Dew point67°
Mon, 10101° / 78°0
101 °
Delmar, Monday, 10 August
Light rain. High 101°, low 78°.
Pressure29.88 inHg
Wind17.2 mph SW
Humidity40%
Visibility6.2 mi
Dew point67°
Tue, 11105° / 83°0
105 °
Delmar, Tuesday, 11 August
Overcast. High 105°, low 83°.
Pressure29.80 inHg
Wind19.4 mph SW
Humidity34%
Visibility6.2 mi
Dew point65°
Wed, 1292° / 70°0.08
92 °
Delmar, Wednesday, 12 August
Light rain. High 92°, low 70°.
Pressure29.83 inHg
Wind1.8 mph N
Humidity62%
Visibility6.2 mi
Dew point70°
Thu, 13101° / 71°0.09
101 °
Delmar, Thursday, 13 August
Light rain. High 101°, low 71°.
Pressure29.74 inHg
Wind16.1 mph NE
Humidity28%
Visibility—
Dew point58°
Fri, 1484° / 71°0.03
84 °
Delmar, Friday, 14 August
Light rain. High 84°, low 71°.
Pressure29.94 inHg
Wind14.7 mph E
Humidity61%
Visibility—
Dew point68°
Sat, 1594° / 71°0
94 °
Delmar, Saturday, 15 August
Light rain. High 94°, low 71°.
Pressure30.00 inHg
Wind12.6 mph E
Humidity35%
Visibility—
Dew point59°
Sun, 1693° / 70°0.07
93 °
Delmar, Sunday, 16 August
Light rain. High 93°, low 70°.
Pressure30.06 inHg
Wind13.6 mph N
Humidity59%
Visibility—
Dew point68°
Mon, 1793° / 71°0.11
93 °
Delmar, Monday, 17 August
Light rain. High 93°, low 71°.
Pressure30.00 inHg
Wind8.9 mph NE
Humidity50%
Visibility—
Dew point67°
Tue, 1893° / 71°0.24
93 °
Delmar, Tuesday, 18 August
Rain. High 93°, low 71°.
Pressure29.97 inHg
Wind17.9 mph NE
Humidity54%
Visibility—
Dew point66°
Wed, 1995° / 73°0
95 °
Delmar, Wednesday, 19 August
Overcast. High 95°, low 73°.
Pressure29.85 inHg
Wind16.6 mph NE
Humidity41%
Visibility—
Dew point65°
Thu, 2085° / 65°0
85 °
Delmar, Thursday, 20 August
Partly cloudy. High 85°, low 65°.
Pressure29.94 inHg
Wind18.3 mph NE
Humidity39%
Visibility—
Dew point55°
Fri, 2188° / 64°0.2
88 °
Delmar, Friday, 21 August
Light rain. High 88°, low 64°.
Pressure29.91 inHg
Wind17.3 mph NE
Humidity54%
Visibility—
Dew point61°
Sat, 2288° / 66°0.01
88 °
Delmar, Saturday, 22 August
Light rain. High 88°, low 66°.
Pressure29.85 inHg
Wind10.7 mph E
Humidity52%
Visibility—
Dew point64°
Sun, 2396° / 70°0.01
96 °
Delmar, Sunday, 23 August
Light rain. High 96°, low 70°.
Pressure29.91 inHg
Wind8.8 mph NE
Humidity37%
Visibility—
Dew point62°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2488° / 70°0.04
88 °
Delmar, Monday, 24 August
Climate normal for this date — 60-year average.
Average high88°
Average low70°
Average precipitation0.04 in
Chance of precipitation23%
Record high100° (2023)
Record low58° (1961)
Tue, 2588° / 70°0.06
88 °
Delmar, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high88°
Average low70°
Average precipitation0.06 in
Chance of precipitation22%
Record high100° (1983)
Record low61° (1985)
Wed, 2688° / 71°0.19
88 °
Delmar, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high88°
Average low71°
Average precipitation0.19 in
Chance of precipitation30%
Record high100° (1983)
Record low59° (2025)
Thu, 2788° / 70°0.08
88 °
Delmar, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high88°
Average low70°
Average precipitation0.08 in
Chance of precipitation30%
Record high101° (2000)
Record low59° (1967)
Fri, 2887° / 70°0.1
87 °
Delmar, Friday, 28 August
Climate normal for this date — 60-year average.
Average high87°
Average low70°
Average precipitation0.1 in
Chance of precipitation18%
Record high101° (2000)
Record low55° (1986)
Sat, 2987° / 69°0.11
87 °
Delmar, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high87°
Average low69°
Average precipitation0.11 in
Chance of precipitation23%
Record high103° (1984)
Record low56° (1986)
Sun, 3086° / 69°0.09
86 °
Delmar, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.09 in
Chance of precipitation25%
Record high101° (2000)
Record low59° (1986)
Mon, 3186° / 69°0.17
86 °
Delmar, Monday, 31 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.17 in
Chance of precipitation33%
Record high102° (2000)
Record low56° (2009)
Tue, 0185° / 69°0.12
85 °
Delmar, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.12 in
Chance of precipitation28%
Record high101° (2000)
Record low55° (1967)
Wed, 0285° / 68°0.12
85 °
Delmar, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.12 in
Chance of precipitation28%
Record high102° (2000)
Record low52° (1974)
Thu, 0385° / 68°0.07
85 °
Delmar, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.07 in
Chance of precipitation33%
Record high101° (2000)
Record low51° (1974)
Fri, 0484° / 68°0.17
84 °
Delmar, Friday, 4 September
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.17 in
Chance of precipitation27%
Record high96° (1990)
Record low51° (1974)
Sat, 0584° / 67°0.08
84 °
Delmar, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.08 in
Chance of precipitation23%
Record high99° (1998)
Record low54° (1974)
Sun, 0684° / 67°0.07
84 °
Delmar, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.07 in
Chance of precipitation27%
Record high99° (1990)
Record low52° (2025)
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 Delmar, MO 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 Delmar, MO 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.