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As of 16:22 CDT

Weather in Jamaica, IL

70°Current weather

Jamaica, Sunday, 25 October, 16:22

Overcast. Feels like 69°. High 73°, low 46°.

Pressure30.33 inHg
Wind4.1 mph S
Humidity38%
Visibility6.2 mi
Dew point45°
Mon, 2674° / 48°0Overcast
74 °Overcast

Jamaica, Monday, 26 October

Overcast. High 74°, low 48°.

Pressure30.33 inHg
Wind2.8 mph S
Humidity47%
Visibility6.2 mi
Dew point50°
Tue, 2772° / 48°0Overcast
72 °Overcast

Jamaica, Tuesday, 27 October

Overcast. High 72°, low 48°.

Pressure30.27 inHg
Wind6.7 mph S
Humidity47%
Visibility6.2 mi
Dew point50°
Wed, 2869° / 52°0Overcast
69 °Overcast

Jamaica, Wednesday, 28 October

Overcast. High 69°, low 52°.

Pressure30.21 inHg
Wind7.4 mph S
Humidity50%
Visibility6.2 mi
Dew point50°
Thu, 2976° / 55°0.05Light rain
76 °Light rain

Jamaica, Thursday, 29 October

Light rain. High 76°, low 55°.

Pressure30.12 inHg
Wind11 mph SW
Humidity51%
Visibility6.2 mi
Dew point52°
Fri, 3072° / 59°0.01Light rain
72 °Light rain

Jamaica, Friday, 30 October

Light rain. High 72°, low 59°.

Pressure30.15 inHg
Wind4.9 mph N
Humidity63%
Visibility—
Dew point56°
Sat, 3166° / 55°0.01Light rain
66 °Light rain

Jamaica, Saturday, 31 October

Light rain. High 66°, low 55°.

Pressure30.24 inHg
Wind10.6 mph SE
Humidity46%
Visibility—
Dew point43°
Sun, 0161° / 55°0.04Light rain
61 °Light rain

Jamaica, Sunday, 1 November

Light rain. High 61°, low 55°.

Pressure30.15 inHg
Wind6.7 mph SE
Humidity80%
Visibility—
Dew point54°
Mon, 0262° / 57°0.02Light rain
62 °Light rain

Jamaica, Monday, 2 November

Light rain. High 62°, low 57°.

Pressure30.09 inHg
Wind8.3 mph E
Humidity77%
Visibility—
Dew point54°
Tue, 0368° / 49°0Overcast
68 °Overcast

Jamaica, Tuesday, 3 November

Overcast. High 68°, low 49°.

Pressure30.09 inHg
Wind11.7 mph E
Humidity49%
Visibility—
Dew point44°
Wed, 0466° / 48°0Overcast
66 °Overcast

Jamaica, Wednesday, 4 November

Overcast. High 66°, low 48°.

Pressure30.06 inHg
Wind9.2 mph E
Humidity43%
Visibility—
Dew point39°
Thu, 0560° / 52°0Overcast
60 °Overcast

Jamaica, Thursday, 5 November

Overcast. High 60°, low 52°.

Pressure29.97 inHg
Wind5.4 mph S
Humidity51%
Visibility—
Dew point41°
Fri, 0665° / 51°0Overcast
65 °Overcast

Jamaica, Friday, 6 November

Overcast. High 65°, low 51°.

Pressure29.94 inHg
Wind7.7 mph E
Humidity59%
Visibility—
Dew point47°
Sat, 0770° / 52°0.01Light rain
70 °Light rain

Jamaica, Saturday, 7 November

Light rain. High 70°, low 52°.

Pressure29.83 inHg
Wind14.6 mph S
Humidity40%
Visibility—
Dew point41°
Sun, 0865° / 52°0.07Light rain
65 °Light rain

Jamaica, Sunday, 8 November

Light rain. High 65°, low 52°.

Pressure29.74 inHg
Wind15.3 mph W
Humidity34%
Visibility—
Dew point34°
Mon, 0952° / 45°0Overcast
52 °Overcast

Jamaica, Monday, 9 November

Overcast. High 52°, low 45°.

Pressure29.56 inHg
Wind20 mph W
Humidity39%
Visibility—
Dew point27°

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 Jamaica, 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 Jamaica, 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.