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As of 16:44 CDT

Weather in Waltham, IL

75°Current weather

Waltham, Thursday, 8 October, 16:44

Clear. Feels like 74°. High 75°, low 49°.

Pressure30.06 inHg
Wind4.8 mph W
Humidity38%
Visibility6.2 mi
Dew point48°
Fri, 0975° / 51°0.09Rain
75 °Rain

Waltham, Friday, 9 October

Rain. High 75°, low 51°.

Pressure30.12 inHg
Wind5.1 mph SE
Humidity69%
Visibility5.9 mi
Dew point55°
Sat, 1076° / 57°0Overcast
76 °Overcast

Waltham, Saturday, 10 October

Overcast. High 76°, low 57°.

Pressure30.09 inHg
Wind7.6 mph S
Humidity55%
Visibility6.2 mi
Dew point56°
Sun, 1173° / 54°0Clear
73 °Clear

Waltham, Sunday, 11 October

Clear. High 73°, low 54°.

Pressure30.00 inHg
Wind1.9 mph E
Humidity64%
Visibility6.2 mi
Dew point56°
Mon, 1281° / 57°0Overcast
81 °Overcast

Waltham, Monday, 12 October

Overcast. High 81°, low 57°.

Pressure29.85 inHg
Wind10.4 mph SW
Humidity58%
Visibility6.2 mi
Dew point61°
Tue, 1367° / 56°0.05Light rain
67 °Light rain

Waltham, Tuesday, 13 October

Light rain. High 67°, low 56°.

Pressure29.97 inHg
Wind11.5 mph NE
Humidity74%
Visibility—
Dew point55°
Wed, 1468° / 54°0.35Rain
68 °Rain

Waltham, Wednesday, 14 October

Rain. High 68°, low 54°.

Pressure29.97 inHg
Wind12.4 mph S
Humidity77%
Visibility—
Dew point51°
Thu, 1574° / 65°0.26Rain
74 °Rain

Waltham, Thursday, 15 October

Rain. High 74°, low 65°.

Pressure29.97 inHg
Wind10.9 mph S
Humidity72%
Visibility—
Dew point58°
Fri, 1664° / 50°0.48Rain
64 °Rain

Waltham, Friday, 16 October

Rain. High 64°, low 50°.

Pressure30.30 inHg
Wind14.9 mph NW
Humidity51%
Visibility—
Dew point43°
Sat, 1751° / 41°0Clear
51 °Clear

Waltham, Saturday, 17 October

Clear. High 51°, low 41°.

Pressure30.50 inHg
Wind12.7 mph N
Humidity46%
Visibility—
Dew point29°
Sun, 1855° / 38°0Clear
55 °Clear

Waltham, Sunday, 18 October

Clear. High 55°, low 38°.

Pressure30.56 inHg
Wind5.9 mph N
Humidity37%
Visibility—
Dew point26°
Mon, 1959° / 41°0Mostly clear
59 °Mostly clear

Waltham, Monday, 19 October

Mostly clear. High 59°, low 41°.

Pressure30.45 inHg
Wind8.8 mph S
Humidity38%
Visibility—
Dew point30°
Tue, 2067° / 45°0Mostly clear
67 °Mostly clear

Waltham, Tuesday, 20 October

Mostly clear. High 67°, low 45°.

Pressure30.24 inHg
Wind10.7 mph S
Humidity48%
Visibility—
Dew point42°
Wed, 2167° / 52°0.26Rain
67 °Rain

Waltham, Wednesday, 21 October

Rain. High 67°, low 52°.

Pressure30.06 inHg
Wind10.6 mph S
Humidity67%
Visibility—
Dew point53°
Thu, 2268° / 51°0Clear
68 °Clear

Waltham, Thursday, 22 October

Clear. High 68°, low 51°.

Pressure30.15 inHg
Wind7.2 mph W
Humidity52%
Visibility—
Dew point46°
Fri, 2369° / 53°0Clear
69 °Clear

Waltham, Friday, 23 October

Clear. High 69°, low 53°.

Pressure30.21 inHg
Wind4.2 mph W
Humidity50%
Visibility—
Dew point46°

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 Waltham, 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 Waltham, 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.