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As of 17:46 CDT

Weather in Helena, IL

88°Current weather

Helena, Sunday, 9 August, 17:46

Clear. Feels like 101°. High 89°, low 70°.

Pressure29.94 inHg
Wind10.8 mph S
Humidity69%
Visibility6.2 mi
Dew point77°
Mon, 1095° / 75°0.01Light rain
95 °Light rain

Helena, Monday, 10 August

Light rain. High 95°, low 75°.

Pressure29.97 inHg
Wind14.1 mph SW
Humidity60%
Visibility6.2 mi
Dew point73°
Tue, 1196° / 76°0Light rain
96 °Light rain

Helena, Tuesday, 11 August

Light rain. High 96°, low 76°.

Pressure29.94 inHg
Wind8 mph SW
Humidity59%
Visibility6.2 mi
Dew point73°
Wed, 1287° / 73°0.11Light rain
87 °Light rain

Helena, Wednesday, 12 August

Light rain. High 87°, low 73°.

Pressure29.85 inHg
Wind8.8 mph W
Humidity67%
Visibility6.2 mi
Dew point73°
Thu, 1387° / 72°0Light rain
87 °Light rain

Helena, Thursday, 13 August

Light rain. High 87°, low 72°.

Pressure29.94 inHg
Wind8.4 mph SW
Humidity69%
Visibility6.2 mi
Dew point73°
Fri, 1493° / 73°0.04Light rain
93 °Light rain

Helena, Friday, 14 August

Light rain. High 93°, low 73°.

Pressure29.97 inHg
Wind8.7 mph S
Humidity71%
Visibility—
Dew point73°
Sat, 1598° / 76°0Mostly clear
98 °Mostly clear

Helena, Saturday, 15 August

Mostly clear. High 98°, low 76°.

Pressure30.00 inHg
Wind12.9 mph S
Humidity43%
Visibility—
Dew point67°
Sun, 1692° / 77°0Mostly clear
92 °Mostly clear

Helena, Sunday, 16 August

Mostly clear. High 92°, low 77°.

Pressure29.94 inHg
Wind13.1 mph SW
Humidity54%
Visibility—
Dew point71°
Mon, 1789° / 68°0.19Light rain
89 °Light rain

Helena, Monday, 17 August

Light rain. High 89°, low 68°.

Pressure30.00 inHg
Wind11.1 mph SE
Humidity67%
Visibility—
Dew point69°
Tue, 1895° / 77°0Overcast
95 °Overcast

Helena, Tuesday, 18 August

Overcast. High 95°, low 77°.

Pressure29.91 inHg
Wind14.1 mph SW
Humidity39%
Visibility—
Dew point64°
Wed, 1993° / 77°0Overcast
93 °Overcast

Helena, Wednesday, 19 August

Overcast. High 93°, low 77°.

Pressure30.03 inHg
Wind6.6 mph E
Humidity53%
Visibility—
Dew point70°
Thu, 2096° / 72°0.1Light rain
96 °Light rain

Helena, Thursday, 20 August

Light rain. High 96°, low 72°.

Pressure29.85 inHg
Wind12.5 mph SW
Humidity46%
Visibility—
Dew point67°
Fri, 2194° / 72°0.01Light rain
94 °Light rain

Helena, Friday, 21 August

Light rain. High 94°, low 72°.

Pressure29.83 inHg
Wind10.4 mph N
Humidity48%
Visibility—
Dew point67°
Sat, 2289° / 66°0Clear
89 °Clear

Helena, Saturday, 22 August

Clear. High 89°, low 66°.

Pressure29.91 inHg
Wind13.4 mph N
Humidity50%
Visibility—
Dew point63°
Sun, 2388° / 65°0Clear
88 °Clear

Helena, Sunday, 23 August

Clear. High 88°, low 65°.

Pressure30.00 inHg
Wind6.8 mph E
Humidity47%
Visibility—
Dew point60°
Mon, 2495° / 70°0Clear
95 °Clear

Helena, Monday, 24 August

Clear. High 95°, low 70°.

Pressure30.00 inHg
Wind7.7 mph SE
Humidity42%
Visibility—
Dew point63°

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 Helena, IL 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 Helena, IL 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.