Monthly outlook for Delmar, IA: average high 66°, average low 49.6°. That is 2.9° above the climate normal for October. Precipitation is expected on 2 days (about 1.0 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 12 October (81.9°), the coolest 18 October (29.6°).
66°/49.6°
Average high / low
+2.9°
Above normal
2 / 5
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
67.3°
61.9°
+3°
19 October – 28 October
63.8°
57.8°
+3.4°
29 October – 7 November
at normal
53.3°
—
October records over 66 years
87.4°3 October 2025All-time high
17.6°30 October 1980All-time low
Climate normals and records are computed from the nearest reference point — Goose Lake (12 mi).
Sat, 1080° / 62°0
80 °
Delmar, Saturday, 10 October
Overcast. High 80°, low 62°.
Pressure30.00 inHg
Wind11.9 mph S
Humidity56%
Visibility6.2 mi
Dew point59°
Sun, 1178° / 56°0
78 °
Delmar, Sunday, 11 October
Clear. High 78°, low 56°.
Pressure29.91 inHg
Wind7 mph S
Humidity58%
Visibility6.2 mi
Dew point57°
Mon, 1282° / 65°0
82 °
Delmar, Monday, 12 October
Overcast. High 82°, low 65°.
Pressure29.80 inHg
Wind10.6 mph SW
Humidity58%
Visibility6.2 mi
Dew point62°
Tue, 1374° / 64°0
74 °
Delmar, Tuesday, 13 October
Clear. High 74°, low 64°.
Pressure29.85 inHg
Wind7.4 mph NW
Humidity72%
Visibility6.2 mi
Dew point63°
Wed, 1467° / 61°0.04
67 °
Delmar, Wednesday, 14 October
Light rain. High 67°, low 61°.
Pressure30.12 inHg
Wind9.2 mph E
Humidity68%
Visibility—
Dew point55°
Thu, 1570° / 54°0.85
70 °
Delmar, Thursday, 15 October
Heavy rain. High 70°, low 54°.
Pressure29.85 inHg
Wind20.8 mph SW
Humidity94%
Visibility—
Dew point56°
Fri, 1661° / 41°0.01
61 °
Delmar, Friday, 16 October
Light rain. High 61°, low 41°.
Pressure30.00 inHg
Wind23.2 mph W
Humidity56%
Visibility—
Dew point35°
Sat, 1743° / 35°0
43 °
Delmar, Saturday, 17 October
Overcast. High 43°, low 35°.
Pressure30.42 inHg
Wind24.1 mph NW
Humidity57%
Visibility—
Dew point27°
Sun, 1847° / 30°0
47 °
Delmar, Sunday, 18 October
Partly cloudy. High 47°, low 30°.
Pressure30.50 inHg
Wind6.8 mph S
Humidity46%
Visibility—
Dew point24°
Mon, 1955° / 38°0
55 °
Delmar, Monday, 19 October
Overcast. High 55°, low 38°.
Pressure30.36 inHg
Wind10.6 mph S
Humidity48%
Visibility—
Dew point32°
Tue, 2061° / 41°0
61 °
Delmar, Tuesday, 20 October
Clear. High 61°, low 41°.
Pressure30.39 inHg
Wind8.3 mph S
Humidity48%
Visibility—
Dew point37°
Wed, 2165° / 45°0
65 °
Delmar, Wednesday, 21 October
Clear. High 65°, low 45°.
Pressure30.24 inHg
Wind14 mph SW
Humidity49%
Visibility—
Dew point41°
Thu, 2264° / 48°0
64 °
Delmar, Thursday, 22 October
Clear. High 64°, low 48°.
Pressure30.12 inHg
Wind8.1 mph SW
Humidity62%
Visibility—
Dew point47°
Fri, 2368° / 47°0
68 °
Delmar, Friday, 23 October
Clear. High 68°, low 47°.
Pressure30.00 inHg
Wind8.5 mph S
Humidity60%
Visibility—
Dew point49°
Sat, 2470° / 52°0
70 °
Delmar, Saturday, 24 October
Partly cloudy. High 70°, low 52°.
Pressure29.94 inHg
Wind14 mph SW
Humidity48%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2557° / 41°0.07
57 °
Delmar, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high57°
Average low41°
Average precipitation0.07 in
Chance of precipitation27%
Record high76° (1989)
Record low26° (2013)
Mon, 2656° / 41°0.11
56 °
Delmar, Monday, 26 October
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.11 in
Chance of precipitation23%
Record high78° (1963)
Record low23° (1962)
Tue, 2756° / 41°0.07
56 °
Delmar, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.07 in
Chance of precipitation18%
Record high75° (2014)
Record low26° (1997)
Wed, 2855° / 40°0.06
55 °
Delmar, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.06 in
Chance of precipitation22%
Record high72° (1999)
Record low20° (1967)
Thu, 2955° / 40°0.06
55 °
Delmar, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.06 in
Chance of precipitation23%
Record high79° (2024)
Record low21° (1980)
Fri, 3057° / 41°0.12
57 °
Delmar, Friday, 30 October
Climate normal for this date — 60-year average.
Average high57°
Average low41°
Average precipitation0.12 in
Chance of precipitation35%
Record high76° (2024)
Record low18° (1980)
Sat, 3155° / 41°0.13
55 °
Delmar, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.13 in
Chance of precipitation28%
Record high72° (1968)
Record low20° (2019)
Sun, 0154° / 40°0.19
54 °
Delmar, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.19 in
Chance of precipitation35%
Record high76° (2000)
Record low17° (2019)
Mon, 0253° / 39°0.11
53 °
Delmar, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.11 in
Chance of precipitation33%
Record high71° (2022)
Record low19° (1991)
Tue, 0353° / 38°0.06
53 °
Delmar, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.06 in
Chance of precipitation23%
Record high72° (1964)
Record low15° (1991)
Wed, 0452° / 39°0.09
52 °
Delmar, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.09 in
Chance of precipitation22%
Record high71° (2015)
Record low13° (1991)
Thu, 0551° / 37°0.1
51 °
Delmar, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.1 in
Chance of precipitation25%
Record high71° (1978)
Record low19° (1991)
Fri, 0652° / 37°0.07
52 °
Delmar, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.07 in
Chance of precipitation32%
Record high70° (2020)
Record low21° (1991)
Sat, 0751° / 36°0.03
51 °
Delmar, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.03 in
Chance of precipitation18%
Record high69° (1966)
Record low11° (1991)
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, IA 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, IA 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.