Philo, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Philo weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain50%0.60″90°70°—
- SundayJul 5Overcast21%—84°69°-6°
- MondayJul 6Partly Cloudy16%—82°67°-2°
- TuesdayJul 7Partly Cloudy——81°61°-1°
- WednesdayJul 8Clear——82°61°+1°
- ThursdayJul 9Thunderstorm41%—84°70°+2°
- FridayJul 10Light Drizzle41%—78°69°-6°
AQI 30 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 39 now. With UV 6.5 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 24 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 39 now. With UV 6.5 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 24 around 1 PM.
- Present
- AQI 39
- UV peak
- 6.5 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 24
PM × Wind × Precip
PM2.5 at 6.0 µg/m³ (AQI 33) with a 0.91 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.91
- 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
- 10:47 PM
- Moonset
- 9:59 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Philo at a glance
- Today vs. normal: 11°F above the seasonal normal for this latitude
- Last frost: April 16 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 61864
16-Day Forecast — Philo
- Sat90°70°50%
- Sun84°69°21%
- Mon82°67°16%
- Tue81°61°4%
- Wed82°61°4%
- Thu84°70°41%
- Fri78°69°41%
- Sat83°66°15%
- Sun72°58°7%
- Mon71°56°6%
- Tue77°59°11%
- Wed80°63°19%
- Thu82°65°20%
- Fri81°69°29%
- Sat84°70°29%
- Sun81°71°39%
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 — Philo
SPC has placed Philo 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
July is Philo's warmest stretch (~75°F) and January its coldest (~26°F); precipitation crests in May at 4.8 inches and ebbs in February to 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 Philo?
- Philo's last spring frost lands near mid-April, and in Philo the first fall frost follows around mid-November.
- What is the rainy season in Philo?
- May is the wettest month in Philo, about 4.8 inches on average; the year totals roughly 41 inches.
- What is the warmest month in Philo?
- Philo peaks in July, when the mean runs near 75°F.
- What is the coldest month in Philo?
- January is Philo's coldest month, averaging about 26°F.
- When can I start a vegetable garden in Philo?
- In Philo, sow peas and hardy greens around mid-April; Philo's tomatoes and peppers wait two weeks more.
- How many rainy days does Philo get?
- Philo averages about 74 days with measurable rain or snow each year.
- What hardiness zone is Philo?
- Since January in Philo averages 26°F, Philo's USDA zone follows that floor — confirm it by ZIP.
- What is the 10-day forecast for Philo?
- Philo'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 Philo?
- See this week's day-by-day rain chances for Philo in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Philo?
- Current conditions for Philo and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Philo forecast updated?
- The Philo forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Philo?
- Today's sunrise and sunset times for Philo 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 Philo?
- The next few days in Philo's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
The humid subtropical climate of Philo, Illinois carries typical Januarys near 26°F and Julys around 75°F — 49°F of seasonal travel.
Rain and snow bring Philo roughly 41 inches a year across approximately 74 measurable-precipitation days.
Philo sits at 40.0°N; that 49°F seasonal swing frames planting windows and frost dates across Philo.
ZIP codes in Philo
- 61864