Monthly outlook for May City, IA: average high 56.4°, average low 40.5°. That is 1.7° above the climate normal for October. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 22 October (72.6°), the coolest 30 October (28.5°).
56.4°/40.5°
Average high / low
+1.7°
Above normal
4 / 4
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
57.8°
55.3°
+1.4°
30 October – 8 November
54°
49.5°
+2.5°
9 November – 18 November
at normal
43.3°
—
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).
Wed, 2170° / 46°0
70 °
May City, Wednesday, 21 October
Clear. High 70°, low 46°.
Pressure30.21 inHg
Wind3.2 mph SW
Humidity65%
Visibility6.2 mi
Dew point52°
Thu, 2273° / 49°0
73 °
May City, Thursday, 22 October
Clear. High 73°, low 49°.
Pressure30.24 inHg
Wind8 mph S
Humidity61%
Visibility6.2 mi
Dew point55°
Fri, 2371° / 54°0
71 °
May City, Friday, 23 October
Overcast. High 71°, low 54°.
Pressure30.09 inHg
Wind13.6 mph SE
Humidity59%
Visibility6.2 mi
Dew point50°
Sat, 2463° / 51°0.42
63 °
May City, Saturday, 24 October
Rain. High 63°, low 51°.
Pressure30.15 inHg
Wind16.1 mph S
Humidity82%
Visibility—
Dew point56°
Sun, 2554° / 44°0.15
54 °
May City, Sunday, 25 October
Light rain. High 54°, low 44°.
Pressure30.45 inHg
Wind11 mph NE
Humidity46%
Visibility—
Dew point33°
Mon, 2644° / 34°0.26
44 °
May City, Monday, 26 October
Snow. High 44°, low 34°.
Pressure30.36 inHg
Wind13.4 mph N
Humidity59%
Visibility—
Dew point28°
Tue, 2739° / 31°0
39 °
May City, Tuesday, 27 October
Overcast. High 39°, low 31°.
Pressure30.65 inHg
Wind16.8 mph N
Humidity42%
Visibility—
Dew point15°
Wed, 2851° / 29°0
51 °
May City, Wednesday, 28 October
Clear. High 51°, low 29°.
Pressure30.18 inHg
Wind19.1 mph SW
Humidity46%
Visibility—
Dew point24°
Thu, 2947° / 31°0
47 °
May City, Thursday, 29 October
Clear. High 47°, low 31°.
Pressure30.24 inHg
Wind14.3 mph NW
Humidity43%
Visibility—
Dew point21°
Fri, 3044° / 28°0
44 °
May City, Friday, 30 October
Clear. High 44°, low 28°.
Pressure30.47 inHg
Wind11.7 mph N
Humidity41%
Visibility—
Dew point17°
Sat, 3154° / 34°0
54 °
May City, Saturday, 31 October
Overcast. High 54°, low 34°.
Pressure30.00 inHg
Wind19.1 mph SW
Humidity60%
Visibility—
Dew point34°
Sun, 0150° / 35°0
50 °
May City, Sunday, 1 November
Clear. High 50°, low 35°.
Pressure30.21 inHg
Wind10.8 mph N
Humidity41%
Visibility—
Dew point23°
Mon, 0257° / 37°0.01
57 °
May City, Monday, 2 November
Light rain. High 57°, low 37°.
Pressure30.09 inHg
Wind16.8 mph S
Humidity50%
Visibility—
Dew point34°
Tue, 0355° / 53°0.11
55 °
May City, Tuesday, 3 November
Light rain. High 55°, low 53°.
Pressure29.83 inHg
Wind16 mph S
Humidity94%
Visibility—
Dew point53°
Wed, 0463° / 49°0
63 °
May City, Wednesday, 4 November
Overcast. High 63°, low 49°.
Pressure29.91 inHg
Wind11.5 mph W
Humidity49%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0549° / 33°0.05
49 °
May City, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.05 in
Chance of precipitation23%
Record high69° (2001)
Record low11° (1991)
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)
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.