Monthly outlook for Helmar, IL: average high 62.7°, average low 47.9°. That is 2.2° above the climate normal for October. Precipitation is expected on 5 days (about 0.8 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 24 October (72.7°), the coolest 17 October (37.7°).
62.7°/47.9°
Average high / low
+2.2°
Above normal
5 / 5
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
64.4°
60.2°
+2.3°
24 October – 2 November
60°
56.3°
+2.1°
3 November – 12 November
at normal
51.1°
—
October records over 66 years
87.6°3 October 2025All-time high
21.9°24 October 1981All-time low
Climate normals and records are computed from the nearest reference point — Boulder Hill (14 mi).
Thu, 1566° / 59°0.26
66 °
Helmar, Thursday, 15 October
Rain. High 66°, low 59°.
Pressure30.00 inHg
Wind7.1 mph E
Humidity80%
Visibility5.0 mi
Dew point58°
Fri, 1659° / 46°0.11
59 °
Helmar, Friday, 16 October
Rain. High 59°, low 46°.
Pressure30.06 inHg
Wind15.5 mph NW
Humidity64%
Visibility4.1 mi
Dew point43°
Sat, 1756° / 38°0
56 °
Helmar, Saturday, 17 October
Clear. High 56°, low 38°.
Pressure30.53 inHg
Wind2.6 mph NW
Humidity48%
Visibility6.2 mi
Dew point33°
Sun, 1861° / 41°0
61 °
Helmar, Sunday, 18 October
Clear. High 61°, low 41°.
Pressure30.47 inHg
Wind10 mph SW
Humidity52%
Visibility6.2 mi
Dew point39°
Mon, 1963° / 40°0
63 °
Helmar, Monday, 19 October
Clear. High 63°, low 40°.
Pressure30.42 inHg
Wind4.7 mph S
Humidity44%
Visibility—
Dew point37°
Tue, 2067° / 43°0
67 °
Helmar, Tuesday, 20 October
Partly cloudy. High 67°, low 43°.
Pressure30.33 inHg
Wind7.1 mph E
Humidity44%
Visibility—
Dew point39°
Wed, 2173° / 53°0
73 °
Helmar, Wednesday, 21 October
Clear. High 73°, low 53°.
Pressure30.21 inHg
Wind11.9 mph S
Humidity55%
Visibility—
Dew point52°
Thu, 2267° / 62°0.19
67 °
Helmar, Thursday, 22 October
Light rain. High 67°, low 62°.
Pressure29.97 inHg
Wind16 mph SW
Humidity80%
Visibility—
Dew point60°
Fri, 2366° / 58°0
66 °
Helmar, Friday, 23 October
Overcast. High 66°, low 58°.
Pressure30.09 inHg
Wind9.5 mph NW
Humidity72%
Visibility—
Dew point56°
Sat, 2473° / 51°0.07
73 °
Helmar, Saturday, 24 October
Light rain. High 73°, low 51°.
Pressure29.88 inHg
Wind18.4 mph SW
Humidity61%
Visibility—
Dew point57°
Sun, 2556° / 43°0
56 °
Helmar, Sunday, 25 October
Clear. High 56°, low 43°.
Pressure30.33 inHg
Wind12.1 mph W
Humidity42%
Visibility—
Dew point31°
Mon, 2653° / 40°0
53 °
Helmar, Monday, 26 October
Clear. High 53°, low 40°.
Pressure30.39 inHg
Wind9.9 mph NW
Humidity38%
Visibility—
Dew point26°
Tue, 2757° / 40°0
57 °
Helmar, Tuesday, 27 October
Overcast. High 57°, low 40°.
Pressure30.27 inHg
Wind12.7 mph SW
Humidity39%
Visibility—
Dew point29°
Wed, 2860° / 45°0
60 °
Helmar, Wednesday, 28 October
Overcast. High 60°, low 45°.
Pressure30.06 inHg
Wind12 mph SW
Humidity33%
Visibility—
Dew point29°
Thu, 2961° / 47°0.01
61 °
Helmar, Thursday, 29 October
Light rain. High 61°, low 47°.
Pressure30.00 inHg
Wind11.7 mph SW
Humidity64%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3058° / 42°0.11
58 °
Helmar, Friday, 30 October
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.11 in
Chance of precipitation27%
Record high78° (1971)
Record low23° (1988)
Sat, 3156° / 43°0.13
56 °
Helmar, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high56°
Average low43°
Average precipitation0.13 in
Chance of precipitation37%
Record high74° (1974)
Record low27° (2019)
Sun, 0155° / 41°0.17
55 °
Helmar, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.17 in
Chance of precipitation35%
Record high74° (2016)
Record low17° (2019)
Mon, 0254° / 40°0.11
54 °
Helmar, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.11 in
Chance of precipitation35%
Record high75° (1961)
Record low23° (1991)
Tue, 0353° / 38°0.07
53 °
Helmar, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.07 in
Chance of precipitation27%
Record high73° (1987)
Record low17° (1991)
Wed, 0453° / 40°0.09
53 °
Helmar, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.09 in
Chance of precipitation23%
Record high71° (2015)
Record low16° (1991)
Thu, 0553° / 39°0.11
53 °
Helmar, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.11 in
Chance of precipitation28%
Record high75° (1978)
Record low18° (1991)
Fri, 0653° / 37°0.07
53 °
Helmar, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.07 in
Chance of precipitation27%
Record high72° (1975)
Record low23° (1991)
Sat, 0752° / 37°0.05
52 °
Helmar, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.05 in
Chance of precipitation20%
Record high69° (2020)
Record low16° (1991)
Sun, 0851° / 37°0.06
51 °
Helmar, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.06 in
Chance of precipitation20%
Record high74° (2020)
Record low12° (1991)
Mon, 0952° / 38°0.11
52 °
Helmar, Monday, 9 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.11 in
Chance of precipitation33%
Record high73° (1999)
Record low16° (1991)
Tue, 1050° / 37°0.12
50 °
Helmar, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.12 in
Chance of precipitation38%
Record high72° (2020)
Record low17° (2017)
Wed, 1148° / 34°0.06
48 °
Helmar, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.06 in
Chance of precipitation27%
Record high71° (1964)
Record low16° (2019)
Thu, 1247° / 33°0.06
47 °
Helmar, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.06 in
Chance of precipitation23%
Record high67° (1964)
Record low6° (2019)
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 Helmar, 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 Helmar, 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.