As of 04:00 CDT

Weather in Streamwood, IL

38°Current weather

Streamwood, Saturday, 17 October, 04:00

Clear. Feels like 35°. High 54°, low 36°.

Pressure30.47 inHg
Wind4.6 mph NW
Humidity77%
Visibility6.2 mi
Dew point32°

Monthly outlook for Streamwood, IL: average high 61.4°, average low 45.6°. That is 2.5° above the climate normal for October. Precipitation is expected on 4 days (about 1.5 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 25 October (69.5°), the coolest 27 October (34.5°).

61.4°/45.6°
Average high / low
+2.5°
Above normal
4 / 5
Wet days / normal
1.5 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
17 October – 26 October63.3°58°+2.9°
27 October – 5 November58.3°54.1°+2.4°
6 November – 15 Novemberat normal48.5°—

October records over 66 years

86.9°3 October 2025All-time high
23.4°26 October 1962All-time low

Climate normals and records are computed from the nearest reference point — Elgin (8 mi).

Sun, 1860° / 41°0Clear
60 °Clear

Streamwood, Sunday, 18 October

Clear. High 60°, low 41°.

Pressure30.42 inHg
Wind13 mph SW
Humidity56%
Visibility6.2 mi
Dew point40°
Mon, 1962° / 41°0Partly cloudy
62 °Partly cloudy

Streamwood, Monday, 19 October

Partly cloudy. High 62°, low 41°.

Pressure30.39 inHg
Wind4.3 mph S
Humidity60%
Visibility6.2 mi
Dew point45°
Tue, 2064° / 46°0Overcast
64 °Overcast

Streamwood, Tuesday, 20 October

Overcast. High 64°, low 46°.

Pressure30.39 inHg
Wind3.8 mph SE
Humidity50%
Visibility6.2 mi
Dew point45°
Wed, 2166° / 48°0Clear
66 °Clear

Streamwood, Wednesday, 21 October

Clear. High 66°, low 48°.

Pressure30.27 inHg
Wind5.5 mph SW
Humidity53%
Visibility—
Dew point46°
Thu, 2267° / 48°0Clear
67 °Clear

Streamwood, Thursday, 22 October

Clear. High 67°, low 48°.

Pressure30.24 inHg
Wind5.8 mph E
Humidity53%
Visibility—
Dew point47°
Fri, 2369° / 53°0Overcast
69 °Overcast

Streamwood, Friday, 23 October

Overcast. High 69°, low 53°.

Pressure30.21 inHg
Wind8.5 mph S
Humidity42%
Visibility—
Dew point42°
Sat, 2467° / 55°0Overcast
67 °Overcast

Streamwood, Saturday, 24 October

Overcast. High 67°, low 55°.

Pressure30.21 inHg
Wind11.7 mph S
Humidity47%
Visibility—
Dew point43°
Sun, 2569° / 55°0Overcast
69 °Overcast

Streamwood, Sunday, 25 October

Overcast. High 69°, low 55°.

Pressure30.00 inHg
Wind12.4 mph SW
Humidity45%
Visibility—
Dew point45°
Mon, 2655° / 41°0.35Rain
55 °Rain

Streamwood, Monday, 26 October

Rain. High 55°, low 41°.

Pressure30.12 inHg
Wind15.9 mph NW
Humidity92%
Visibility—
Dew point40°
Tue, 2750° / 35°0Partly cloudy
50 °Partly cloudy

Streamwood, Tuesday, 27 October

Partly cloudy. High 50°, low 35°.

Pressure30.45 inHg
Wind6.4 mph SE
Humidity41%
Visibility—
Dew point24°
Wed, 2852° / 44°0.62Rain
52 °Rain

Streamwood, Wednesday, 28 October

Rain. High 52°, low 44°.

Pressure30.09 inHg
Wind17.6 mph S
Humidity78%
Visibility—
Dew point38°
Thu, 2957° / 46°0.04Light rain
57 °Light rain

Streamwood, Thursday, 29 October

Light rain. High 57°, low 46°.

Pressure29.94 inHg
Wind25.4 mph W
Humidity68%
Visibility—
Dew point43°
Fri, 3058° / 43°0Overcast
58 °Overcast

Streamwood, Friday, 30 October

Overcast. High 58°, low 43°.

Pressure30.06 inHg
Wind13.5 mph S
Humidity58%
Visibility—
Dew point40°
Sat, 3168° / 50°0.42Rain
68 °Rain

Streamwood, Saturday, 31 October

Rain. High 68°, low 50°.

Pressure29.68 inHg
Wind25.1 mph S
Humidity78%
Visibility—
Dew point52°
Sun, 0166° / 48°0.05Light rain
66 °Light rain

Streamwood, Sunday, 1 November

Light rain. High 66°, low 48°.

Pressure29.94 inHg
Wind18.4 mph SW
Humidity65%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0253° / 40°0.11Climate normal
53 °Climate normal

Streamwood, Monday, 2 November

Climate normal for this date — 60-year average.

Average high53°
Average low40°
Average precipitation0.11 in
Chance of precipitation35%
Record high74° (1961)
Record low22° (1991)
Tue, 0352° / 39°0.06Climate normal
52 °Climate normal

Streamwood, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high52°
Average low39°
Average precipitation0.06 in
Chance of precipitation30%
Record high72° (1987)
Record low16° (1991)
Wed, 0452° / 40°0.09Climate normal
52 °Climate normal

Streamwood, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high52°
Average low40°
Average precipitation0.09 in
Chance of precipitation23%
Record high71° (2015)
Record low15° (1991)
Thu, 0552° / 39°0.12Climate normal
52 °Climate normal

Streamwood, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high52°
Average low39°
Average precipitation0.12 in
Chance of precipitation28%
Record high74° (1978)
Record low18° (1991)
Fri, 0652° / 37°0.08Climate normal
52 °Climate normal

Streamwood, Friday, 6 November

Climate normal for this date — 60-year average.

Average high52°
Average low37°
Average precipitation0.08 in
Chance of precipitation28%
Record high71° (1975)
Record low22° (1991)
Sat, 0751° / 37°0.04Climate normal
51 °Climate normal

Streamwood, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high51°
Average low37°
Average precipitation0.04 in
Chance of precipitation18%
Record high68° (2009)
Record low14° (1991)
Sun, 0850° / 37°0.05Climate normal
50 °Climate normal

Streamwood, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high50°
Average low37°
Average precipitation0.05 in
Chance of precipitation18%
Record high72° (2020)
Record low13° (1991)
Mon, 0951° / 37°0.12Climate normal
51 °Climate normal

Streamwood, Monday, 9 November

Climate normal for this date — 60-year average.

Average high51°
Average low37°
Average precipitation0.12 in
Chance of precipitation32%
Record high72° (1999)
Record low17° (1991)
Tue, 1049° / 36°0.1Climate normal
49 °Climate normal

Streamwood, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high49°
Average low36°
Average precipitation0.1 in
Chance of precipitation37%
Record high71° (2020)
Record low17° (2017)
Wed, 1147° / 34°0.06Climate normal
47 °Climate normal

Streamwood, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high47°
Average low34°
Average precipitation0.06 in
Chance of precipitation27%
Record high70° (1964)
Record low15° (2019)
Thu, 1246° / 33°0.06Climate normal
46 °Climate normal

Streamwood, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high46°
Average low33°
Average precipitation0.06 in
Chance of precipitation23%
Record high65° (1964)
Record low2° (2019)
Fri, 1346° / 33°0.04Climate normal
46 °Climate normal

Streamwood, Friday, 13 November

Climate normal for this date — 60-year average.

Average high46°
Average low33°
Average precipitation0.04 in
Chance of precipitation20%
Record high69° (1999)
Record low2° (2019)
Sat, 1447° / 33°0.07Climate normal
47 °Climate normal

Streamwood, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high47°
Average low33°
Average precipitation0.07 in
Chance of precipitation35%
Record high69° (1971)
Record low13° (1986)
Sun, 1546° / 34°0.08Climate normal
46 °Climate normal

Streamwood, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high46°
Average low34°
Average precipitation0.08 in
Chance of precipitation27%
Record high69° (2025)
Record low15° (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 Streamwood, 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 Streamwood, 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.