As of 00:27 CDT

Weather in Ion, IA

54°

Ion, Thursday, 8 October, 00:27

Overcast. Feels like 52°. High 72°, low 49°.

Pressure30.00 inHg

Wind6.9 mph W

Humidity72%

Visibility6.2 mi

Dew point44°

See detailed hourly forecast

Monthly outlook for Ion, IA: average high 64°, average low 47.4°. That is 2.9° above the climate normal for October. Precipitation is expected on 6 days (about 1.6 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 10 October (79.8°), the coolest 21 October (32.4°).

64°/47.4°

Average high / low

+2.9°

Above normal

6 / 5

Wet days / normal

1.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 October – 17 October	68.6°	59.9°	+4.9°
18 October – 27 October	56.2°	55.8°	+0.2°
28 October – 6 November	at normal	51.2°	—

October records over 66 years

86.2°1 October 1976All-time high

21.6°27 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Waterville (7 mi).

Fri, 0974° / 50°

0.1

74 °

Ion, Friday, 9 October

Rain. High 74°, low 50°.

Pressure30.06 inHg

Wind8 mph SE

Humidity69%

Visibility2.9 mi

Dew point55°

Sat, 1080° / 61°

80 °

Ion, Saturday, 10 October

Clear. High 80°, low 61°.

Pressure30.00 inHg

Wind12.3 mph S

Humidity59%

Visibility6.2 mi

Dew point61°

Sun, 1177° / 59°

77 °

Ion, Sunday, 11 October

Clear. High 77°, low 59°.

Pressure29.94 inHg

Wind9.5 mph S

Humidity55%

Visibility6.2 mi

Dew point56°

Mon, 1277° / 60°

77 °

Ion, Monday, 12 October

Light rain. High 77°, low 60°.

Pressure29.71 inHg

Wind13.4 mph NW

Humidity58%

Visibility—

Dew point57°

Tue, 1356° / 45°

56 °

Ion, Tuesday, 13 October

Overcast. High 56°, low 45°.

Pressure30.12 inHg

Wind15.5 mph NW

Humidity52%

Visibility—

Dew point36°

Wed, 1456° / 40°

0.08

56 °

Ion, Wednesday, 14 October

Light rain. High 56°, low 40°.

Pressure30.00 inHg

Wind15.1 mph SE

Humidity62%

Visibility—

Dew point41°

Thu, 1580° / 60°

0.73

80 °

Ion, Thursday, 15 October

Rain. High 80°, low 60°.

Pressure29.65 inHg

Wind20.7 mph S

Humidity73%

Visibility—

Dew point69°

Fri, 1669° / 50°

0.09

69 °

Ion, Friday, 16 October

Light rain. High 69°, low 50°.

Pressure29.85 inHg

Wind12.7 mph W

Humidity83%

Visibility—

Dew point58°

Sat, 1746° / 43°

46 °

Ion, Saturday, 17 October

Overcast. High 46°, low 43°.

Pressure30.12 inHg

Wind14.3 mph W

Humidity84%

Visibility—

Dew point40°

Sun, 1854° / 43°

54 °

Ion, Sunday, 18 October

Overcast. High 54°, low 43°.

Pressure30.27 inHg

Wind8.7 mph W

Humidity58%

Visibility—

Dew point37°

Mon, 1961° / 40°

61 °

Ion, Monday, 19 October

Clear. High 61°, low 40°.

Pressure30.18 inHg

Wind14 mph SW

Humidity54%

Visibility—

Dew point40°

Tue, 2054° / 39°

54 °

Ion, Tuesday, 20 October

Overcast. High 54°, low 39°.

Pressure30.24 inHg

Wind12.6 mph N

Humidity53%

Visibility—

Dew point36°

Wed, 2153° / 32°

53 °

Ion, Wednesday, 21 October

Mostly clear. High 53°, low 32°.

Pressure30.21 inHg

Wind11.5 mph S

Humidity51%

Visibility—

Dew point31°

Thu, 2262° / 43°

0.13

62 °

Ion, Thursday, 22 October

Light rain. High 62°, low 43°.

Pressure29.56 inHg

Wind19.8 mph S

Humidity61%

Visibility—

Dew point46°

Fri, 2353° / 44°

0.49

53 °

Ion, Friday, 23 October

Rain. High 53°, low 44°.

Pressure29.71 inHg

Wind11.6 mph NW

Humidity57%

Visibility—

Dew point37°

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

Sat, 2455° / 42°

0.14

55 °

Ion, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high55°

Average low42°

Average precipitation0.14 in

Chance of precipitation35%

Record high76° (1963)

Record low25° (2020)

Sun, 2554° / 41°

0.04

54 °

Ion, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high54°

Average low41°

Average precipitation0.04 in

Chance of precipitation17%

Record high74° (1989)

Record low27° (2019)

Mon, 2654° / 41°

0.07

54 °

Ion, Monday, 26 October

Climate normal for this date — 60-year average.

Average high54°

Average low41°

Average precipitation0.07 in

Chance of precipitation23%

Record high73° (1989)

Record low25° (2020)

Tue, 2754° / 40°

0.07

54 °

Ion, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high54°

Average low40°

Average precipitation0.07 in

Chance of precipitation22%

Record high72° (2014)

Record low22° (2020)

Wed, 2853° / 39°

0.07

53 °

Ion, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high53°

Average low39°

Average precipitation0.07 in

Chance of precipitation25%

Record high70° (2016)

Record low27° (1969)

Thu, 2953° / 40°

0.09

53 °

Ion, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high53°

Average low40°

Average precipitation0.09 in

Chance of precipitation27%

Record high78° (2024)

Record low25° (2019)

Fri, 3054° / 40°

0.08

54 °

Ion, Friday, 30 October

Climate normal for this date — 60-year average.

Average high54°

Average low40°

Average precipitation0.08 in

Chance of precipitation30%

Record high76° (2024)

Record low22° (2023)

Sat, 3152° / 40°

0.11

52 °

Ion, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high52°

Average low40°

Average precipitation0.11 in

Chance of precipitation35%

Record high70° (1968)

Record low26° (2019)

Sun, 0151° / 38°

0.18

51 °

Ion, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high51°

Average low38°

Average precipitation0.18 in

Chance of precipitation28%

Record high72° (2000)

Record low22° (2023)

Mon, 0250° / 38°

0.07

50 °

Ion, Monday, 2 November

Climate normal for this date — 60-year average.

Average high50°

Average low38°

Average precipitation0.07 in

Chance of precipitation27%

Record high69° (2022)

Record low15° (1991)

Tue, 0350° / 37°

0.07

50 °

Ion, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high50°

Average low37°

Average precipitation0.07 in

Chance of precipitation22%

Record high70° (2008)

Record low11° (1991)

Wed, 0449° / 37°

0.08

49 °

Ion, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high49°

Average low37°

Average precipitation0.08 in

Chance of precipitation30%

Record high70° (2008)

Record low6° (1991)

Thu, 0549° / 36°

0.07

49 °

Ion, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high49°

Average low36°

Average precipitation0.07 in

Chance of precipitation25%

Record high69° (2020)

Record low16° (1991)

Fri, 0649° / 36°

0.06

49 °

Ion, Friday, 6 November

Climate normal for this date — 60-year average.

Average high49°

Average low36°

Average precipitation0.06 in

Chance of precipitation27%

Record high68° (2020)

Record low10° (1991)

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 Ion, 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 Ion, 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.