Monthly outlook for May City, IA: average high 57.1°, average low 43.1°. That is 2.4° above the climate normal for October. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 22 October (75.4°), the coolest 28 October (33.7°).
57.1°/43.1°
Average high / low
+2.4°
Above normal
5 / 4
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
59.5°
54.7°
+2.7°
31 October – 9 November
53°
48.9°
+2.3°
10 November – 19 November
at normal
42.8°
—
October records over 66 years
89.2°3 October 2025All-time high
14.4°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Melvin (7 mi).
Thu, 2275° / 46°0
75 °
May City, Thursday, 22 October
Clear. High 75°, low 46°.
Pressure30.18 inHg
Wind5.4 mph S
Humidity66%
Visibility6.2 mi
Dew point58°
Fri, 2372° / 50°0.03
72 °
May City, Friday, 23 October
Light rain. High 72°, low 50°.
Pressure30.06 inHg
Wind14.2 mph S
Humidity73%
Visibility6.2 mi
Dew point53°
Sat, 2472° / 55°0.06
72 °
May City, Saturday, 24 October
Light rain. High 72°, low 55°.
Pressure30.12 inHg
Wind13.4 mph SW
Humidity52%
Visibility6.2 mi
Dew point51°
Sun, 2557° / 49°0.1
57 °
May City, Sunday, 25 October
Light rain. High 57°, low 49°.
Pressure30.39 inHg
Wind9.4 mph NE
Humidity62%
Visibility6.2 mi
Dew point41°
Mon, 2647° / 44°0.58
47 °
May City, Monday, 26 October
Rain. High 47°, low 44°.
Pressure30.39 inHg
Wind12.8 mph NE
Humidity94%
Visibility—
Dew point44°
Tue, 2745° / 37°0.54
45 °
May City, Tuesday, 27 October
Snow. High 45°, low 37°.
Pressure30.27 inHg
Wind14.8 mph N
Humidity83%
Visibility—
Dew point38°
Wed, 2845° / 34°0.02
45 °
May City, Wednesday, 28 October
Light snow. High 45°, low 34°.
Pressure30.50 inHg
Wind11.3 mph NW
Humidity70%
Visibility—
Dew point32°
Thu, 2951° / 34°0
51 °
May City, Thursday, 29 October
Clear. High 51°, low 34°.
Pressure30.24 inHg
Wind17.2 mph S
Humidity64%
Visibility—
Dew point35°
Fri, 3057° / 44°0
57 °
May City, Friday, 30 October
Overcast. High 57°, low 44°.
Pressure29.80 inHg
Wind19 mph S
Humidity72%
Visibility—
Dew point43°
Sat, 3156° / 52°0.36
56 °
May City, Saturday, 31 October
Rain. High 56°, low 52°.
Pressure29.65 inHg
Wind17.5 mph S
Humidity82%
Visibility—
Dew point49°
Sun, 0156° / 47°0
56 °
May City, Sunday, 1 November
Overcast. High 56°, low 47°.
Pressure29.88 inHg
Wind12.2 mph NW
Humidity56%
Visibility—
Dew point39°
Mon, 0244° / 36°0
44 °
May City, Monday, 2 November
Clear. High 44°, low 36°.
Pressure30.36 inHg
Wind15 mph NW
Humidity41%
Visibility—
Dew point20°
Tue, 0351° / 37°0
51 °
May City, Tuesday, 3 November
Overcast. High 51°, low 37°.
Pressure30.24 inHg
Wind7 mph SE
Humidity43%
Visibility—
Dew point26°
Wed, 0460° / 40°0
60 °
May City, Wednesday, 4 November
Overcast. High 60°, low 40°.
Pressure29.44 inHg
Wind22.7 mph NW
Humidity63%
Visibility—
Dew point43°
Thu, 0551° / 38°0
51 °
May City, Thursday, 5 November
Partly cloudy. High 51°, low 38°.
Pressure29.97 inHg
Wind29.2 mph NW
Humidity45%
Visibility—
Dew point21°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0649° / 33°0.04
49 °
May City, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.04 in
Chance of precipitation20%
Record high72° (2020)
Record low2° (1991)
Sat, 0748° / 32°0.02
48 °
May City, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.02 in
Chance of precipitation10%
Record high71° (2001)
Record low-17° (1991)
Sun, 0848° / 32°0.04
48 °
May City, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.04 in
Chance of precipitation13%
Record high75° (1999)
Record low-2° (1991)
Mon, 0946° / 32°0.15
46 °
May City, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.15 in
Chance of precipitation23%
Record high71° (1999)
Record low13° (2018)
Tue, 1044° / 29°0.09
44 °
May City, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.09 in
Chance of precipitation32%
Record high69° (2012)
Record low10° (2018)
Wed, 1142° / 27°0.06
42 °
May City, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high42°
Average low27°
Average precipitation0.06 in
Chance of precipitation20%
Record high64° (1964)
Record low3° (1986)
Thu, 1241° / 27°0.06
41 °
May City, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.06 in
Chance of precipitation23%
Record high66° (1999)
Record low-1° (1966)
Fri, 1344° / 28°0.06
44 °
May City, Friday, 13 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.06 in
Chance of precipitation30%
Record high71° (1999)
Record low1° (1986)
Sat, 1443° / 29°0.03
43 °
May City, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high43°
Average low29°
Average precipitation0.03 in
Chance of precipitation13%
Record high69° (2025)
Record low8° (2014)
Sun, 1544° / 28°0.06
44 °
May City, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.06 in
Chance of precipitation20%
Record high67° (2001)
Record low7° (2000)
Mon, 1644° / 28°0.1
44 °
May City, Monday, 16 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.1 in
Chance of precipitation20%
Record high69° (2001)
Record low-2° (2014)
Tue, 1743° / 28°0.06
43 °
May City, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.06 in
Chance of precipitation23%
Record high65° (2001)
Record low4° (2014)
Wed, 1842° / 28°0.06
42 °
May City, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.06 in
Chance of precipitation18%
Record high70° (1999)
Record low2° (2014)
Thu, 1941° / 28°0.09
41 °
May City, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.09 in
Chance of precipitation28%
Record high59° (2003)
Record low6° (1997)
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 May City, 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 May City, 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.