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Weather Tomorrow

Macomb weather forecast

Illinois, United States · Chicago time · 40.46°, -90.67°

Current conditions · 7:30 PM local

Current conditions in Macomb

62°F

Light drizzle

Feels like 67°F

Humidity
85%
Wind
10 mph NNE
Gusts
15 mph
UV index
0
Visibility
9.9 mi

Right now

Conditions in Macomb at the moment: light drizzle, 17 °C. It feels close to the actual reading at 17 °C. Wind is from the NNE at 16 km/h. Precipitation in the last hour measured 0.1 mm. Humidity stands at 96% with sea-level pressure near 1006 hPa.

At a glance

Today

67° / 59°

Heavy rain · rain likely (100%)

Tomorrow

74° / 58°

Overcast

Upcoming · to Saturday

87° / 57°

A steady stretch: highs near 87°, lows around 57°, and no day above a 39% rain chance through Saturday.

Next 3 days

Expect heavy rain today, between 15 °C and 19 °C. Rain chance peaks at 100% with around 24.8 mm possible. Gusts may reach 46 km/h from the ENE. Expect overcast tomorrow, between 14 °C and 23 °C. Gusts may reach 44 km/h from the NNE. Expect light drizzle Tuesday, between 14 °C and 24 °C.

Today

Sun, Jun 21

Heavy rain

67°59°

Rain chance
100%
Precip
1 in
Max wind
18 mph

Tomorrow

Mon, Jun 22

Overcast

74°58°

Rain chance
11%
Precip
0 in
Max wind
12 mph

Tuesday

Tue, Jun 23

Light drizzle

75°57°

Rain chance
2%
Precip
0 in
Max wind
10 mph

Next 48 hours

  1. 12 AM65°0%2 mph
  2. 1 AM64°1%2 mph
  3. 2 AM64°1%3 mph
  4. 3 AM64°2%3 mph
  5. 4 AM64°8%2 mph
  6. 5 AM65°6%3 mph
  7. 6 AM65°27%4 mph
  8. 7 AM65°31%6 mph
  9. 8 AM64°55%7 mph
  10. 9 AM64°69%13 mph
  11. 10 AM62°83%13 mph
  12. 11 AM61°99%18 mph
  13. 12 PM61°100%13 mph
  14. 1 PM63°99%16 mph
  15. 2 PM62°98%14 mph
  16. 3 PM63°83%14 mph
  17. 4 PM64°54%9 mph
  18. 5 PM66°43%1 mph
  19. 6 PM67°21%1 mph
  20. 7 PM64°14%11 mph
  21. 8 PM62°21%11 mph
  22. 9 PM60°30%12 mph
  23. 10 PM59°17%12 mph
  24. 11 PM59°14%12 mph
  25. 12 AM58°11%12 mph
  26. 1 AM58°8%11 mph
  27. 2 AM58°5%12 mph
  28. 3 AM58°1%11 mph
  29. 4 AM58°2%10 mph
  30. 5 AM59°2%12 mph
  31. 6 AM59°2%8 mph
  32. 7 AM60°2%9 mph
  33. 8 AM61°1%9 mph
  34. 9 AM62°1%9 mph
  35. 10 AM64°1%10 mph
  36. 11 AM65°1%10 mph
  37. 12 PM68°1%11 mph
  38. 1 PM70°1%11 mph
  39. 2 PM71°1%9 mph
  40. 3 PM73°1%8 mph
  41. 4 PM73°2%9 mph
  42. 5 PM74°2%8 mph
  43. 6 PM73°2%7 mph
  44. 7 PM72°2%7 mph
  45. 8 PM69°3%4 mph
  46. 9 PM68°3%4 mph
  47. 10 PM66°3%3 mph
  48. 11 PM64°2%3 mph

In depth

The weather picture for Macomb opens with light drizzle; it's 17 °C out, feeling like 17 °C. Today's forecast calls for heavy rain, topping out near 19 °C before falling back to 15 °C overnight. Winds blow mainly from the ENE around 29 km/h, with gusts up to 46 km/h. A warming trend takes daytime highs from 19 to 31 °C over the coming week. Rain is in the picture on today, Wednesday, Saturday, with roughly 32 mm expected in total across the week. Tomorrow brings overcast with a high of 23 °C and a 11% chance of precipitation. Sunrise comes at 05:32 and sunset at 20:36, giving 15.1 hours of daylight. Current humidity sits at 96% with pressure near 1006 hPa. Looking further out, Thursday shows overcast with a high around 25 °C, while Saturday ends the week at 31 °C. Forecast details are refreshed throughout the day as new model runs arrive, so check back for the latest figures.

Air quality

28

Good

US AQI · European AQI 18

Air quality in Macomb is currently good, with a US AQI of 28 (European AQI 18). The dominant pollutant right now is ozone. Air quality is healthy; no precautions needed. Fine particulate matter (PM2.5) measures 6.6 µg/m³.

Pollutants

PM2.5
6.6 µg/m³
PM10
6.6 µg/m³
Ozone (O₃)
44 µg/m³
NO₂
3.7 µg/m³
SO₂
0.1 µg/m³
CO
127 µg/m³
Dust
0 µg/m³

Sun & UV

Sunrise
5:32 AM
Sunset
8:36 PM
Daylight
15h 04m
Max UV
4.35 Moderate

Wind

Wind
10 mph
Gusts
15 mph
Direction
NNE (30°)

Farming weather

Soil temperatures today read surface 15.3 °C, 6 cm 17.4 °C, 18 cm 18.6 °C, 54 cm 18.5 °C. Soil moisture sits at 0-1 cm at 0.34 m³/m³, 3-9 cm at 0.34 m³/m³, 27-81 cm at 0.34 m³/m³. For maize, the root-zone reading is within the ideal 0.2-0.35 m³/m³ band. Forecast rain (32 mm) roughly covers crop water demand (ET0 26 mm), so irrigation can likely be paused. A suitable spraying window opens around 06:00 on 2026-06-22, with winds at or below 15 km/h and no rain expected. Projected growing degree days over the next week: maize 72, wheat 111.

Topsoil moisture
0.271 m³/m³
Soil temp
61°F
ET₀ today
0.69 mm
Spray window
~5:00
Rain (next 7d)
1.3 in
Wind
10 mph
Humidity
85%

Full farming outlook for Macomb →

Advisory summary

No weather alert thresholds are crossed for Macomb in the current forecast (derived from forecast data, not official warnings). Conditions may still change — check back for updates.

All data for Macomb
Every forecast variable for Macomb with human-readable labels
VariableValue
CityMacomb, Illinois, United States
Coordinates40.45921, -90.6718
Elevation215 m
TimezoneAmerica/Chicago
Population18,547
Observed at (local)7:30 PM
Temperature (2 m)62°F
Apparent temperature67°F
Relative humidity (2 m)85%
Dew point (2 m)60°F
Precipitation (last hour)0 in
Rain0 in
Showers0 in
Snowfall0 in
Weather code (WMO)51
Cloud cover96%
Surface pressure29 inHg
Sea-level pressure29.7 inHg
Wind speed (10 m)10 mph
Wind gusts (10 m)15 mph
Wind direction (10 m)30° (NNE)
Visibility9.9 mi
UV index0
Day / nightDay
Today max / min67°F / 59°F
Today feels-like max / min72°F / 56°F
Today precipitation sum1 in
Today rain sum1 in
Today snowfall sum0 in
Today max precip probability100%
Today max wind / gusts18 mph / 29 mph
Dominant wind direction76° (ENE)
Sunrise / sunset5:32 AM / 8:36 PM
Daylight duration15h 04m
Sunshine duration0h 00m
Max UV index4.35
Reference evapotranspiration (ET₀)0.69 mm
Topsoil moisture (0–1 cm)0.271 m³/m³
Surface soil temperature61°F
US AQI28
European AQI18
PM2.56.6 µg/m³
PM106.6 µg/m³
Ozone (O₃)44 µg/m³
Nitrogen dioxide (NO₂)3.7 µg/m³
Sulphur dioxide (SO₂)0.1 µg/m³
Carbon monoxide (CO)127 µg/m³
Dust0 µg/m³

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Frequently asked questions

Will it rain in Macomb tomorrow?

Rain is unlikely in Macomb tomorrow; the precipitation chance stays around 11%.

What is the temperature in Macomb today?

Today Macomb sees heavy rain with a high of 19 °C and a low of 15 °C.

How hot will it be in Macomb tomorrow?

Tomorrow's high in Macomb is forecast at 23 °C with overcast.

Is it windy in Macomb today?

Yes, yes — gusts up to 46 km/h today.

What is the UV index in Macomb today?

The UV index peaks at 4 today, which is moderate.

What time is sunrise and sunset in Macomb today?

The sun rises at 05:32 and sets at 20:36 local time.

Is the air quality in Macomb good today?

Air quality is good right now, with a US AQI reading of 28.