As of 19:44 CDT

Weather in Mercer, IA

59°

Mercer, Wednesday, 14 October, 19:44

Overcast. Feels like 58°. High 60°, low 52°.

Pressure30.09 inHg

Wind6.6 mph E

Humidity74%

Visibility6.2 mi

Dew point51°

See detailed hourly forecast

Monthly outlook for Mercer, IA: average high 62.1°, average low 46.9°. That is 1° above the climate normal for October. Precipitation is expected on 5 days (about 1.2 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 22 October (73.2°), the coolest 17 October (35.3°).

62.1°/46.9°

Average high / low

+1°

Above normal

5 / 4

Wet days / normal

1.2 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
14 October – 23 October	63.8°	61.8°	+1.1°
24 October – 2 November	59.4°	57°	+1.3°
3 November – 12 November	at normal	51.6°	—

October records over 66 years

92.1°5 October 1963All-time high

10.4°27 October 1997All-time low

Climate normals and records are computed from the nearest reference point — Prescott (6 mi).

Thu, 1564° / 51°

0.5

64 °

Mercer, Thursday, 15 October

Heavy rain. High 64°, low 51°.

Pressure29.91 inHg

Wind12.2 mph NW

Humidity97%

Visibility1.1 mi

Dew point60°

Fri, 1650° / 42°

50 °

Mercer, Friday, 16 October

Overcast. High 50°, low 42°.

Pressure30.45 inHg

Wind22.7 mph N

Humidity62%

Visibility6.2 mi

Dew point36°

Sat, 1756° / 35°

56 °

Mercer, Saturday, 17 October

Clear. High 56°, low 35°.

Pressure30.56 inHg

Wind7.4 mph S

Humidity46%

Visibility6.2 mi

Dew point31°

Sun, 1861° / 42°

61 °

Mercer, Sunday, 18 October

Clear. High 61°, low 42°.

Pressure30.36 inHg

Wind12.3 mph S

Humidity59%

Visibility6.2 mi

Dew point41°

Mon, 1964° / 45°

64 °

Mercer, Monday, 19 October

Clear. High 64°, low 45°.

Pressure30.33 inHg

Wind9.1 mph S

Humidity58%

Visibility—

Dew point44°

Tue, 2068° / 47°

68 °

Mercer, Tuesday, 20 October

Partly cloudy. High 68°, low 47°.

Pressure30.24 inHg

Wind9.8 mph S

Humidity55%

Visibility—

Dew point45°

Wed, 2171° / 53°

0.03

71 °

Mercer, Wednesday, 21 October

Light rain. High 71°, low 53°.

Pressure30.06 inHg

Wind17.3 mph S

Humidity64%

Visibility—

Dew point55°

Thu, 2273° / 62°

0.2

73 °

Mercer, Thursday, 22 October

Light rain. High 73°, low 62°.

Pressure29.97 inHg

Wind13.4 mph S

Humidity55%

Visibility—

Dew point53°

Fri, 2371° / 58°

0.05

71 °

Mercer, Friday, 23 October

Light rain. High 71°, low 58°.

Pressure29.94 inHg

Wind16.7 mph S

Humidity89%

Visibility—

Dew point62°

Sat, 2466° / 46°

0.38

66 °

Mercer, Saturday, 24 October

Rain. High 66°, low 46°.

Pressure30.09 inHg

Wind20.8 mph NW

Humidity73%

Visibility—

Dew point46°

Sun, 2556° / 41°

56 °

Mercer, Sunday, 25 October

Clear. High 56°, low 41°.

Pressure30.42 inHg

Wind14.4 mph NW

Humidity40%

Visibility—

Dew point30°

Mon, 2659° / 39°

59 °

Mercer, Monday, 26 October

Clear. High 59°, low 39°.

Pressure30.39 inHg

Wind11.7 mph S

Humidity40%

Visibility—

Dew point31°

Tue, 2757° / 46°

57 °

Mercer, Tuesday, 27 October

Overcast. High 57°, low 46°.

Pressure30.18 inHg

Wind13.7 mph SW

Humidity57%

Visibility—

Dew point39°

Wed, 2852° / 46°

52 °

Mercer, Wednesday, 28 October

Overcast. High 52°, low 46°.

Pressure30.00 inHg

Wind12.5 mph SW

Humidity81%

Visibility—

Dew point45°

Thu, 2966° / 46°

66 °

Mercer, Thursday, 29 October

Partly cloudy. High 66°, low 46°.

Pressure30.00 inHg

Wind9.6 mph SW

Humidity58%

Visibility—

Dew point46°

From day 17 onward the outlook is built from 60-year climate statistics

Fri, 3057° / 42°

0.12

57 °

Mercer, Friday, 30 October

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.12 in

Chance of precipitation35%

Record high75° (2024)

Record low21° (1980)

Sat, 3156° / 40°

0.11

56 °

Mercer, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high56°

Average low40°

Average precipitation0.11 in

Chance of precipitation30%

Record high76° (1968)

Record low20° (1993)

Sun, 0156° / 40°

0.19

56 °

Mercer, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high56°

Average low40°

Average precipitation0.19 in

Chance of precipitation33%

Record high74° (1990)

Record low22° (2002)

Mon, 0253° / 39°

0.09

53 °

Mercer, Monday, 2 November

Climate normal for this date — 60-year average.

Average high53°

Average low39°

Average precipitation0.09 in

Chance of precipitation28%

Record high76° (1964)

Record low12° (1991)

Tue, 0354° / 39°

0.09

54 °

Mercer, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high54°

Average low39°

Average precipitation0.09 in

Chance of precipitation20%

Record high74° (1978)

Record low9° (1991)

Wed, 0453° / 38°

0.08

53 °

Mercer, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high53°

Average low38°

Average precipitation0.08 in

Chance of precipitation17%

Record high71° (1978)

Record low10° (1991)

Thu, 0553° / 38°

0.05

53 °

Mercer, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°

Average low38°

Average precipitation0.05 in

Chance of precipitation22%

Record high73° (2015)

Record low20° (1967)

Fri, 0653° / 37°

0.06

53 °

Mercer, Friday, 6 November

Climate normal for this date — 60-year average.

Average high53°

Average low37°

Average precipitation0.06 in

Chance of precipitation20%

Record high72° (1980)

Record low15° (1991)

Sat, 0753° / 36°

0.02

53 °

Mercer, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high53°

Average low36°

Average precipitation0.02 in

Chance of precipitation8%

Record high72° (1966)

Record low-1° (1991)

Sun, 0853° / 37°

0.04

53 °

Mercer, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high53°

Average low37°

Average precipitation0.04 in

Chance of precipitation20%

Record high75° (1999)

Record low-4° (1991)

Mon, 0953° / 37°

0.11

53 °

Mercer, Monday, 9 November

Climate normal for this date — 60-year average.

Average high53°

Average low37°

Average precipitation0.11 in

Chance of precipitation32%

Record high72° (1999)

Record low19° (1991)

Tue, 1050° / 34°

0.09

50 °

Mercer, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high50°

Average low34°

Average precipitation0.09 in

Chance of precipitation25%

Record high74° (2012)

Record low10° (2018)

Wed, 1148° / 32°

0.07

48 °

Mercer, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high48°

Average low32°

Average precipitation0.07 in

Chance of precipitation20%

Record high73° (1964)

Record low8° (1986)

Thu, 1247° / 32°

0.06

47 °

Mercer, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high47°

Average low32°

Average precipitation0.06 in

Chance of precipitation23%

Record high69° (2005)

Record low2° (1968)

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 Mercer, 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 Mercer, 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.