As of 17:42 CDT

Weather in Mercer, IA

74°

Mercer, Wednesday, 21 October, 17:42

Clear. Feels like 73°. High 75°, low 52°.

Pressure30.15 inHg

Wind3.6 mph S

Humidity56%

Visibility6.2 mi

Dew point57°

See detailed hourly forecast

Monthly outlook for Mercer, IA: average high 61.7°, average low 48°. That is 2.5° above the climate normal for October. Precipitation is expected on 5 days (about 1.6 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 22 October (76.4°), the coolest 29 October (35.8°).

61.7°/48°

Average high / low

+2.5°

Above normal

5 / 4

Wet days / normal

1.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
21 October – 30 October	65.7°	59.1°	+3.7°
31 October – 9 November	55.1°	53.6°	+0.8°
10 November – 19 November	at normal	48.9°	—

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, 2276° / 52°

76 °

Mercer, Thursday, 22 October

Clear. High 76°, low 52°.

Pressure30.21 inHg

Wind5.2 mph S

Humidity55%

Visibility6.2 mi

Dew point55°

Fri, 2374° / 55°

74 °

Mercer, Friday, 23 October

Overcast. High 74°, low 55°.

Pressure30.18 inHg

Wind11.9 mph SE

Humidity56%

Visibility6.2 mi

Dew point53°

Sat, 2474° / 58°

74 °

Mercer, Saturday, 24 October

Mostly clear. High 74°, low 58°.

Pressure30.24 inHg

Wind11 mph S

Humidity53%

Visibility6.2 mi

Dew point52°

Sun, 2575° / 56°

75 °

Mercer, Sunday, 25 October

Mostly clear. High 75°, low 56°.

Pressure30.27 inHg

Wind6 mph S

Humidity56%

Visibility6.2 mi

Dew point53°

Mon, 2669° / 55°

0.02

69 °

Mercer, Monday, 26 October

Light rain. High 69°, low 55°.

Pressure30.18 inHg

Wind8.3 mph NW

Humidity60%

Visibility—

Dew point51°

Tue, 2757° / 48°

0.09

57 °

Mercer, Tuesday, 27 October

Light rain. High 57°, low 48°.

Pressure30.18 inHg

Wind11.4 mph N

Humidity78%

Visibility—

Dew point48°

Wed, 2849° / 39°

0.14

49 °

Mercer, Wednesday, 28 October

Rain. High 49°, low 39°.

Pressure30.27 inHg

Wind17 mph NW

Humidity82%

Visibility—

Dew point38°

Thu, 2950° / 36°

50 °

Mercer, Thursday, 29 October

Overcast. High 50°, low 36°.

Pressure30.42 inHg

Wind8.2 mph N

Humidity43%

Visibility—

Dew point25°

Fri, 3058° / 38°

58 °

Mercer, Friday, 30 October

Overcast. High 58°, low 38°.

Pressure30.03 inHg

Wind16.9 mph S

Humidity52%

Visibility—

Dew point35°

Sat, 3167° / 49°

67 °

Mercer, Saturday, 31 October

Overcast. High 67°, low 49°.

Pressure29.94 inHg

Wind11.5 mph S

Humidity71%

Visibility—

Dew point52°

Sun, 0158° / 53°

0.26

58 °

Mercer, Sunday, 1 November

Light rain. High 58°, low 53°.

Pressure30.09 inHg

Wind14.4 mph E

Humidity78%

Visibility—

Dew point51°

Mon, 0253° / 53°

0.74

53 °

Mercer, Monday, 2 November

Rain. High 53°, low 53°.

Pressure29.85 inHg

Wind12.1 mph E

Humidity97%

Visibility—

Dew point52°

Tue, 0353° / 48°

0.34

53 °

Mercer, Tuesday, 3 November

Rain. High 53°, low 48°.

Pressure30.03 inHg

Wind17.8 mph NE

Humidity91%

Visibility—

Dew point49°

Wed, 0444° / 38°

44 °

Mercer, Wednesday, 4 November

Overcast. High 44°, low 38°.

Pressure30.30 inHg

Wind13.2 mph NE

Humidity74%

Visibility—

Dew point36°

Thu, 0555° / 39°

55 °

Mercer, Thursday, 5 November

Mostly clear. High 55°, low 39°.

Pressure30.12 inHg

Wind2.5 mph E

Humidity70%

Visibility—

Dew point41°

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

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)

Fri, 1349° / 32°

0.07

49 °

Mercer, Friday, 13 November

Climate normal for this date — 60-year average.

Average high49°

Average low32°

Average precipitation0.07 in

Chance of precipitation20%

Record high76° (1999)

Record low4° (1986)

Sat, 1449° / 34°

0.03

49 °

Mercer, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high49°

Average low34°

Average precipitation0.03 in

Chance of precipitation18%

Record high72° (2025)

Record low12° (2014)

Sun, 1549° / 34°

0.04

49 °

Mercer, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high49°

Average low34°

Average precipitation0.04 in

Chance of precipitation20%

Record high70° (2001)

Record low1° (1972)

Mon, 1650° / 33°

0.04

50 °

Mercer, Monday, 16 November

Climate normal for this date — 60-year average.

Average high50°

Average low33°

Average precipitation0.04 in

Chance of precipitation12%

Record high69° (2001)

Record low12° (2014)

Tue, 1750° / 34°

0.1

50 °

Mercer, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high50°

Average low34°

Average precipitation0.1 in

Chance of precipitation23%

Record high71° (2016)

Record low10° (2005)

Wed, 1849° / 34°

0.06

49 °

Mercer, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high49°

Average low34°

Average precipitation0.06 in

Chance of precipitation22%

Record high71° (1999)

Record low7° (1961)

Thu, 1949° / 33°

0.07

49 °

Mercer, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high49°

Average low33°

Average precipitation0.07 in

Chance of precipitation25%

Record high67° (2007)

Record low14° (1961)

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.