Chalco, United States experiences average highs of 18°C (64°F) and lows of 7°C (45°F) throughout the year. Rainfall is moderate, averaging about 8 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have stayed broadly stable across the available records.
Chalco, United States Weather & Climate 2026
Monthly climate averages for Chalco, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Mar–Aug At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5.7/10
Best: May, June, July, August, September
UV Index
5
Low
Temperature 18°C / 7°C
Feels Like 16°C / 5°C
Rainy Days 8
Rainfall 71 mm
Sunshine 9 h
Humidity 66%
Wind Speed 22 km/h
Dew Point 6°C
Snow Days 4 days
Frost Days 15 days
Hottest Month
31°C
July
Avg Low21°C
Rain9days
Coldest Month
-7°C
January
Avg High1°C
Rain5days
Driest Month
4days
December
Avg High5°C
Avg Low-4°C
Windiest Month
26 km/h
April (Gusts 50)
Worst Time to Visit
Consider avoiding January, February, March, December due to very cold temperatures.
Sun Position
Sunrise 05:53
Daylight 15.1h
Sunset 21:00
Live conditions—
Chalco on the map · live conditions
Chalco, United States
- Continent
- Americas
- Country
- United States
- City
- Chalco
- Population
- 11K
- Elevation
- 327 m
- Coordinates
- 41.18°, -96.15°
Seasonal Breakdown
Spring
Mar–May
Avg High 18°C
Avg Low 7°C
Rain 10 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 30°C
Avg Low 20°C
Rain 9 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 19°C
Avg Low 9°C
Rain 7 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 4°C
Avg Low -6°C
Rain 5 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 1°C / -7°C . Feb: 5°C / -6°C . Mar: 13°C / 1°C . Apr: 18°C / 6°C . May: 23°C / 13°C . Jun: 30°C / 19°C . Jul: 31°C / 21°C . Aug: 29°C / 20°C . Sep: 27°C / 17°C . Oct: 19°C / 9°C . Nov: 11°C / 2°C . Dec: 5°C / -4°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 33 mm. Feb: 25 mm. Mar: 81 mm. Apr: 78 mm. May: 134 mm. Jun: 108 mm. Jul: 88 mm. Aug: 96 mm. Sep: 72 mm. Oct: 73 mm. Nov: 33 mm. Dec: 35 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 70%. Feb: 64%. Mar: 64%. Apr: 60%. May: 66%. Jun: 64%. Jul: 69%. Aug: 70%. Sep: 65%. Oct: 61%. Nov: 65%. Dec: 68%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 22 km/h . Feb: 23 km/h . Mar: 25 km/h . Apr: 26 km/h . May: 22 km/h . Jun: 21 km/h . Jul: 18 km/h . Aug: 18 km/h . Sep: 21 km/h . Oct: 23 km/h . Nov: 23 km/h . Dec: 22 km/h .
Sunshine
Sunshine
Sunshine: Jan: 6h. Feb: 8h. Mar: 8h. Apr: 10h. May: 10h. Jun: 13h. Jul: 12h. Aug: 11h. Sep: 10h. Oct: 8h. Nov: 7h. Dec: 7h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 6. May: UV 7. Jun: UV 8. Jul: UV 8. Aug: UV 7. Sep: UV 6. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 7 days. Feb: 6 days. Mar: 3 days. Apr: 1 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 1 days. Nov: 2 days. Dec: 5 days.
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending drier by about 24 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 31°C | Jul · 31°C |
| Coldest month | Feb 2025 · -9°C | Jan · -7°C |
| Wettest month | Sep 2025 · 107 mm | May · 134 mm |
| Windiest month | Mar 2025 · 27 km/h | Apr · 26 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Fair May best
Excellent June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 1°C / -7°C | -3°C / -13°C | 5days (33 mm) Good | 6.3h Fair | 70% Muggy | 2.7 Moderate | Poor | View Details |
| February | 5°C / -6°C | 0°C / -12°C | 5days (25 mm) Good | 7.9h Good | 64% Muggy | 3.9 Moderate | Poor | View Details |
| March | 13°C / 1°C | 9°C / -4°C | 9days (81 mm) Wet | 8.1h Good | 64% Muggy | 4.9 Moderate | Poor | View Details |
| April | 18°C / 6°C | 15°C / 2°C | 9days (78 mm) Wet | 9.5h Good | 60% Moderate | 6.2 High | Fair | View Details |
| May best | 23°C / 13°C | 22°C / 11°C | 12days (134 mm) Wet | 9.9h Good | 66% Muggy | 7 High | Excellent | View Details |
| June best | 30°C / 19°C | 32°C / 20°C | 9days (108 mm) Wet | 12.6h Excellent | 64% Muggy | 7.6 Very High | Excellent | View Details |
| July best | 31°C / 21°C | 34°C / 22°C | 9days (88 mm) Wet | 12.4h Excellent | 69% Muggy | 7.6 Very High | Excellent | View Details |
| August best | 29°C / 20°C | 32°C / 21°C | 9days (96 mm) Wet | 11.4h Excellent | 70% Muggy | 7 High | Excellent | View Details |
| September best | 27°C / 17°C | 27°C / 16°C | 8days (72 mm) Wet | 10.1h Excellent | 65% Muggy | 5.9 High | Excellent | View Details |
| October | 19°C / 9°C | 16°C / 6°C | 7days (73 mm) Good | 8.1h Good | 61% Muggy | 4.2 Moderate | Good | View Details |
| November | 11°C / 2°C | 7°C / -3°C | 5days (33 mm) Good | 7h Good | 65% Muggy | 2.8 Moderate | Poor | View Details |
| December | 5°C / -4°C | 0°C / -9°C | 4days (35 mm) Good | 6.5h Fair | 68% Muggy | 2.3 Moderate | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Chalco are May, June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Chalco, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Chalco is July, with average daytime highs of 31°C (87°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Chalco is January, with average overnight lows of -7°C (19°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Chalco is May, averaging 134mm of precipitation across 12 rainy days. An umbrella or waterproof jacket is essential.
Chalco receives approximately 110 sunshine hours per year. The sunniest month is June with around 13 hours. Based on climate data for Chalco.
The least favorable months to visit Chalco are January, February, March, December, primarily due to very cold temperatures. For the best conditions, consider May, June, July, August, September instead.
The annual average UV index in Chalco is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Chalco is 66%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Chalco receives snow. Months with snowfall average 4 snow days and 7 cm (3 in) of accumulation, with about 15 frost days during winter.
Average wind speeds in Chalco are 22 km/h (14 mph). The windiest month is April with peak winds reaching 26 km/h (16 mph) (gusts up to 50 km/h / 31 mph).
Chalco averages 7 clear-sky days per month with overall cloud cover around 49%. The clearest skies occur in September.
The annual average dew point in Chalco is 6°C (43°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Chalco has a Hot-Summer Continental climate, classified as Dfa under the Köppen system. Continental climates experience extreme temperature ranges — hot summers and cold, snowy winters.
The 'feels like' temperature in Chalco ranges from 5°C (41°F) to 16°C (61°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Chalco. It earns a climate score of 8.4/10 with Excellent.
For June in Chalco, pack Umbrella, Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses. With average highs of 30°C (86°F) and 9 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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