Pesotum, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Pesotum weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Rain42%0.22″89°70°—
- SundayJul 5Overcast25%—83°69°-6°
- MondayJul 6Overcast16%—78°64°-5°
- TuesdayJul 7Overcast——80°59°+2°
- WednesdayJul 8Overcast——83°63°+3°
- ThursdayJul 9T-storm w/ Hail40%0.01″81°71°-2°
- FridayJul 10Light Drizzle40%—86°70°+5°
AQI 34 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 9.2 µg/m³ (AQI 51) with a 0.88 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 49 now. With UV 5.9 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 27 around 1 PM.
- Present
- AQI 49
- UV peak
- 5.9 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 27
PM × Wind × Precip
PM2.5 at 9.2 µg/m³ (AQI 51) with a 0.88 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.88
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:48 PM
- Moonset
- 9:59 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Pesotum at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: April 15 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 61863
16-Day Forecast — Pesotum
- Sat89°70°42%
- Sun83°69°25%
- Mon78°64°16%
- Tue80°59°4%
- Wed83°63°4%
- Thu81°71°40%
- Fri86°70°40%
- Sat76°60°18%
- Sun73°55°7%
- Mon73°58°6%
- Tue76°54°12%
- Wed77°61°20%
- Thu82°63°26%
- Fri84°67°32%
- Sat77°67°29%
- Sun74°65°32%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Pesotum
SPC has placed Pesotum in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Microseason · July 1–5
Cicadas claim the scorching afternoon
Dog-day cicadas emerge in waves, their rasp dominating every sunny hour; heat peaks above 90 degrees daily.
Day 185 of 365 · Wedge 37 of 72
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
The year in Pesotum tops out in July (~75°F) and dips lowest in January (~26°F), with May wettest at 4.8 inches and February driest at 2.2 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 26° | 2.3″ | 5 |
| February | 30° | 2.2″ | 5 |
| March | 41° | 2.8″ | 6 |
| April | 52° | 3.9″ | 8 |
| May | 63° | 4.8″ | 9 |
| June | 72° | 4.6″ | 7 |
| July | 75° | 4.5″ | 7 |
| August | 74° | 3.5″ | 6 |
| September | 67° | 3.4″ | 5 |
| October | 55° | 3.4″ | 6 |
| November | 41° | 3.2″ | 6 |
| December | 31° | 2.4″ | 5 |
Frequently asked
- When does it freeze in Pesotum?
- Frost typically leaves Pesotum by mid-April and returns to Pesotum near mid-November.
- What is the rainy season in Pesotum?
- May is the wettest month in Pesotum, about 4.8 inches on average; the year totals roughly 41 inches.
- What is the warmest month in Pesotum?
- July is Pesotum's warmest month, averaging about 75°F.
- What is the coldest month in Pesotum?
- Pesotum bottoms out in January, with a mean near 26°F.
- When can I start a vegetable garden in Pesotum?
- Frost-hardy sowings begin at mid-April in Pesotum; warm-season starts follow two weeks on.
- How many rainy days does Pesotum get?
- Pesotum records around 74 days of measurable precipitation annually.
- What hardiness zone is Pesotum?
- Pesotum's hardiness zone tracks its winter low; with January near 26°F, check the USDA ZIP map for the exact zone.
- What is the 10-day forecast for Pesotum?
- Pesotum's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Pesotum?
- See this week's day-by-day rain chances for Pesotum in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Pesotum?
- Current conditions for Pesotum and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Pesotum forecast updated?
- The Pesotum forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Pesotum?
- Today's sunrise and sunset times for Pesotum are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Pesotum?
- The next few days in Pesotum's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Pesotum, Illinois has a humid subtropical climate: January averages roughly 26°F, July about 75°F, 49°F between them.
Yearly precipitation in Pesotum totals around 41 inches, spread over about 74 days of rain or snow.
Latitude 39.9°N gives Pesotum its 49°F swing, and with it the rhythm of Pesotum's growing season.
ZIP codes in Pesotum
- 61863