As of 00:17 CDT

Weather in Merriam, IL

63°

Merriam, Saturday, 31 October, 00:17

Clear. Feels like 61°. High 70°, low 55°.

Pressure30.27 inHg

Wind0 mph N

Humidity42%

Visibility6.2 mi

Dew point40°

See detailed hourly forecast

Sun, 0166° / 54°

0.13

66 °

Merriam, Sunday, 1 November

Light rain. High 66°, low 54°.

Pressure30.30 inHg

Wind6.2 mph SE

Humidity66%

Visibility6.2 mi

Dew point52°

Mon, 0268° / 56°

68 °

Merriam, Monday, 2 November

Overcast. High 68°, low 56°.

Pressure30.15 inHg

Wind10.3 mph SE

Humidity74%

Visibility6.2 mi

Dew point53°

Tue, 0373° / 63°

0.01

73 °

Merriam, Tuesday, 3 November

Light rain. High 73°, low 63°.

Pressure30.00 inHg

Wind14 mph S

Humidity69%

Visibility6.2 mi

Dew point59°

Wed, 0471° / 64°

71 °

Merriam, Wednesday, 4 November

Rain. High 71°, low 64°.

Pressure29.77 inHg

Wind12.5 mph S

Humidity93%

Visibility—

Dew point65°

Thu, 0569° / 55°

0.03

69 °

Merriam, Thursday, 5 November

Light rain. High 69°, low 55°.

Pressure29.68 inHg

Wind9 mph SE

Humidity63%

Visibility—

Dew point55°

Fri, 0665° / 48°

65 °

Merriam, Friday, 6 November

Clear. High 65°, low 48°.

Pressure30.00 inHg

Wind8.1 mph N

Humidity53%

Visibility—

Dew point45°

Sat, 0765° / 47°

65 °

Merriam, Saturday, 7 November

Overcast. High 65°, low 47°.

Pressure30.09 inHg

Wind6.2 mph NE

Humidity52%

Visibility—

Dew point43°

Sun, 0866° / 49°

66 °

Merriam, Sunday, 8 November

Partly cloudy. High 66°, low 49°.

Pressure30.09 inHg

Wind5.7 mph NE

Humidity48%

Visibility—

Dew point42°

Mon, 0967° / 53°

67 °

Merriam, Monday, 9 November

Overcast. High 67°, low 53°.

Pressure30.09 inHg

Wind8.1 mph N

Humidity41%

Visibility—

Dew point40°

Tue, 1068° / 48°

68 °

Merriam, Tuesday, 10 November

Clear. High 68°, low 48°.

Pressure30.03 inHg

Wind4.9 mph W

Humidity44%

Visibility—

Dew point41°

Wed, 1171° / 50°

71 °

Merriam, Wednesday, 11 November

Clear. High 71°, low 50°.

Pressure29.85 inHg

Wind11.5 mph W

Humidity38%

Visibility—

Dew point40°

Thu, 1267° / 47°

67 °

Merriam, Thursday, 12 November

Clear. High 67°, low 47°.

Pressure29.83 inHg

Wind8.9 mph W

Humidity41%

Visibility—

Dew point38°

Fri, 1354° / 42°

54 °

Merriam, Friday, 13 November

Clear. High 54°, low 42°.

Pressure29.97 inHg

Wind19.3 mph NW

Humidity31%

Visibility—

Dew point22°

Sat, 1452° / 33°

52 °

Merriam, Saturday, 14 November

Clear. High 52°, low 33°.

Pressure30.12 inHg

Wind13.2 mph NW

Humidity38%

Visibility—

Dew point23°

Sun, 1557° / 39°

57 °

Merriam, Sunday, 15 November

Overcast. High 57°, low 39°.

Pressure30.15 inHg

Wind11.4 mph S

Humidity32%

Visibility—

Dew point25°

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 Merriam, 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 Merriam, 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.