As of 16:14 CDT

Weather in Mercer, IA

54°

Mercer, Thursday, 15 October, 16:14

Overcast. Feels like 53°. High 57°, low 50°.

Pressure30.00 inHg

Wind16.7 mph NW

Humidity91%

Visibility2.6 mi

Dew point51°

See detailed hourly forecast

Monthly outlook for Mercer, IA: average high 62°, average low 49.6°. That is 1.2° above the climate normal for October. Precipitation is expected on 7 days (about 1.8 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 20 October (68.3°), the coolest 17 October (35.2°).

62°/49.6°

Average high / low

+1.2°

Above normal

7 / 4

Wet days / normal

1.8 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
15 October – 24 October	62.1°	61.3°	+0.5°
25 October – 3 November	61.9°	56.5°	+3°
4 November – 13 November	at normal	51.1°	—

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).

Fri, 1652° / 42°

52 °

Mercer, Friday, 16 October

Overcast. High 52°, low 42°.

Pressure30.47 inHg

Wind22.3 mph N

Humidity55%

Visibility6.2 mi

Dew point33°

Sat, 1757° / 35°

57 °

Mercer, Saturday, 17 October

Clear. High 57°, low 35°.

Pressure30.56 inHg

Wind9.6 mph SW

Humidity46%

Visibility6.2 mi

Dew point32°

Sun, 1862° / 42°

62 °

Mercer, Sunday, 18 October

Clear. High 62°, low 42°.

Pressure30.33 inHg

Wind14.6 mph S

Humidity56%

Visibility6.2 mi

Dew point41°

Mon, 1962° / 46°

0.02

62 °

Mercer, Monday, 19 October

Light rain. High 62°, low 46°.

Pressure30.27 inHg

Wind10.8 mph S

Humidity64%

Visibility6.2 mi

Dew point45°

Tue, 2068° / 49°

68 °

Mercer, Tuesday, 20 October

Clear. High 68°, low 49°.

Pressure30.21 inHg

Wind10.4 mph S

Humidity55%

Visibility—

Dew point47°

Wed, 2165° / 54°

0.06

65 °

Mercer, Wednesday, 21 October

Light rain. High 65°, low 54°.

Pressure30.24 inHg

Wind12.7 mph S

Humidity73%

Visibility—

Dew point51°

Thu, 2265° / 59°

0.16

65 °

Mercer, Thursday, 22 October

Light rain. High 65°, low 59°.

Pressure30.12 inHg

Wind17.7 mph S

Humidity85%

Visibility—

Dew point56°

Fri, 2367° / 58°

0.1

67 °

Mercer, Friday, 23 October

Light rain. High 67°, low 58°.

Pressure29.94 inHg

Wind21.8 mph S

Humidity52%

Visibility—

Dew point47°

Sat, 2466° / 52°

0.06

66 °

Mercer, Saturday, 24 October

Light rain. High 66°, low 52°.

Pressure30.12 inHg

Wind22.1 mph S

Humidity50%

Visibility—

Dew point43°

Sun, 2563° / 48°

63 °

Mercer, Sunday, 25 October

Clear. High 63°, low 48°.

Pressure30.45 inHg

Wind11.4 mph E

Humidity40%

Visibility—

Dew point36°

Mon, 2667° / 53°

0.01

67 °

Mercer, Monday, 26 October

Light rain. High 67°, low 53°.

Pressure30.33 inHg

Wind12.7 mph SE

Humidity60%

Visibility—

Dew point49°

Tue, 2762° / 57°

62 °

Mercer, Tuesday, 27 October

Overcast. High 62°, low 57°.

Pressure30.18 inHg

Wind13.9 mph SW

Humidity65%

Visibility—

Dew point49°

Wed, 2859° / 57°

0.34

59 °

Mercer, Wednesday, 28 October

Rain. High 59°, low 57°.

Pressure30.15 inHg

Wind11.5 mph S

Humidity96%

Visibility—

Dew point56°

Thu, 2962° / 49°

0.45

62 °

Mercer, Thursday, 29 October

Rain. High 62°, low 49°.

Pressure30.03 inHg

Wind14.2 mph SW

Humidity93%

Visibility—

Dew point59°

Fri, 3059° / 43°

59 °

Mercer, Friday, 30 October

Overcast. High 59°, low 43°.

Pressure30.39 inHg

Wind9.1 mph N

Humidity40%

Visibility—

Dew point32°

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

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)

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)

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.