May
Other strong months: October and September
86/100 weather score
United States · 1991–2020
Best time to visit
Catonsville
For Catonsville, May has the most comfortable weather in our climate comparison. Typical daytime highs are 24.4°C, nights average 15.1°C, and rainfall totals about 92 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.
Best all-round monthMay
Typical daytime high24.4°C
Typical night-time low15.1°C
May rainfall92 mm
June
Other strong months: August and September
79/100 weather score
April
Other strong months: October and November
81/100 weather score
Make the answer personal
Choose the weather
that suits you.
Set the daytime temperature and rainfall you are comfortable with. We will show only the months that meet every choice, using the measured 1991–2020 averages below.
3 months fit your choices for Catonsville
January has the lowest comfort score at 5 out of 100, compared with May at 86. The main reason is that days reach only 6.2°C, 18° below the 24°C the score treats as ideal.
Quick answers
Planning a trip to Catonsville?
These answers come from the same measured monthly climate record shown on this page.
When is the best time to visit Catonsville?
May is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 24.4°C and 92 mm of rain.
What is the hottest month in Catonsville?
July is hottest in this record, with a typical daytime high of 31.9°C and a night-time low of 22.9°C.
Which month has the least rain?
January and February have the lowest monthly rainfall total at 70 mm.
Is this a weather forecast?
No. These are long-term measured averages from 1991–2020. Check a current forecast before you travel.
Month by month
See how the weather
changes through the year.
The bars combine daytime temperature, night-time temperature and rainfall. The figures are measured historical averages, not a forecast for a particular trip.
| Month | Day | Night | Rain | Wet days | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | 6.2°C | -1°C | 70 mm | 7.4 | 3.2°C | 9 h 41 | 5 | Good coverage |
| February | 8°C | 0.1°C | 70 mm | 7.3 | 2.3°C | 10 h 39 | 12 | Good coverage |
| March | 12.8°C | 3.9°C | 89 mm | 8.5 | 4.2°C | 11 h 50 | 31 | Good coverage |
| April | 19.3°C | 9.5°C | 94 mm | 8.2 | 8.5°C | 13 h 10 | 62 | Good coverage |
| May | 24.4°C | 15.1°C | 92 mm | 8.4 | 14.2°C | 14 h 18 | 86 | Good coverage |
| June | 29.6°C | 20.3°C | 98 mm | 8.6 | 20.2°C | 14 h 55 | 58 | Good coverage |
| July | 31.9°C | 22.9°C | 123 mm | 8.7 | 24.7°C | 14 h 41 | 42 | Good coverage |
| August | 30.7°C | 22.1°C | 113 mm | 7.8 | 25.7°C | 13 h 42 | 50 | Good coverage |
| September | 27°C | 18.6°C | 118 mm | 6.2 | 23.3°C | 12 h 24 | 69 | Good coverage |
| October | 20.4°C | 11.9°C | 96 mm | 6.7 | 18.2°C | 11 h 06 | 71 | Good coverage |
| November | 14.2°C | 6.2°C | 72 mm | 6.1 | 11.9°C | 9 h 58 | 44 | Good coverage |
| December | 8.7°C | 1.8°C | 94 mm | 8.1 | 6.8°C | 9 h 25 | 13 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 26.7°C26 Jan 2024 | -15.5°C7 Jan 2014 | 79 mm9 Jan 2024 | 185 mm2024 · driest 24 mm in 2018 | 26 |
| February | 28.3°C21 Feb 2018 | -16.0°C20 Feb 2015 | 63 mm24 Feb 2016 | 135 mm2016 · driest 9 mm in 2009 | 26 |
| March | 30.6°C31 Mar 2025 | -10.0°C3 Mar 2009 | 72 mm10 Mar 2011 | 140 mm2024 · driest 4 mm in 2006 | 26 |
| April | 35.6°C29 Apr 2024 | -1.0°C5 Apr 2016 | 101 mm30 Apr 2014 | 236 mm2014 · driest 41 mm in 2016 | 25 |
| May | 37.2°C19 May 2026 | 2.8°C9 May 2020 | 81 mm27 May 2018 | 236 mm2018 · driest 10 mm in 2023 | 27 |
| June | 41.1°C29 Jun 2012 | 11.1°C2 Jun 2003 | 82 mm10 Jun 2013 | 221 mm2013 · driest 19 mm in 2017 | 25 |
| July | 42.2°C22 Jul 2011 | 15.6°C2 Jul 2001 | 91 mm22 Jul 1999 | 259 mm2018 · driest 52 mm in 2007 | 26 |
| August | 41.1°C8 Aug 2007 | 11.7°C8 Aug 2004 | 138 mm12 Aug 2014 | 304 mm2011 · driest 12 mm in 2006 | 26 |
| September | 37.8°C5 Sep 2023 | 8.9°C26 Sep 2001 | 145 mm30 Sep 2010 | 276 mm1999 · driest 2 mm in 2019 | 26 |
| October | 35.0°C9 Oct 2007 | 2.8°C18 Oct 2009 | 154 mm29 Oct 2012 | 238 mm2012 · driest 3 mm in 2000 | 26 |
| November | 28.3°C6 Nov 2024 | -6.0°C19 Nov 2014 | 62 mm16 Nov 2006 | 199 mm2018 · driest 16 mm in 2012 | 25 |
| December | 25.6°C1 Dec 2006 | -13.2°C24 Dec 2022 | 61 mm7 Dec 2011 | 184 mm2009 · driest 20 mm in 2017 | 25 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 18 | 2 |
| February | <1 | 0 | 14 | 2 |
| March | <1 | 0 | 6 | 3 |
| April | 5 | 2 | <1 | 3 |
| May | 14 | 6 | 0 | 3 |
| June | 26 | 15 | 0 | 3 |
| July | 30 | 23 | 0 | 3 |
| August | 29 | 19 | 0 | 3 |
| September | 21 | 8 | 0 | 3 |
| October | 6 | 1 | 0 | 3 |
| November | <1 | 0 | 2 | 2 |
| December | 0 | 0 | 12 | 4 |
| Month | Dry days reaching 20°C | Wet days | Days with heavy rain | Weeks with 3+ wet days | Typical high by year |
|---|---|---|---|---|---|
| January | 1% | 24% | 8% | 22% | 3.0–10.1°C |
| February | 2% | 25% | 8% | 28% | 4.2–12.1°C |
| March | 13% | 27% | 9% | 31% | 10.0–16.9°C |
| April | 37% | 28% | 10% | 30% | 17.7–21.9°C |
| May | 62% | 28% | 9% | 34% | 21.9–27.0°C |
| June | 72% | 28% | 10% | 34% | 28.3–31.9°C |
| July | 72% | 28% | 11% | 34% | 30.3–34.4°C |
| August | 76% | 24% | 11% | 22% | 29.2–32.2°C |
| September | 76% | 22% | 11% | 23% | 25.0–29.0°C |
| October | 46% | 20% | 9% | 17% | 18.9–23.1°C |
| November | 13% | 21% | 8% | 19% | 12.0–16.8°C |
| December | 2% | 26% | 12% | 26% | 5.9–12.1°C |
A dry day reaching 20°C records under 1 mm of rain. A wet day records at least 1 mm, while a heavy-rain day records at least 10 mm. The weekly figure is the share of seven-day periods containing three or more wet days. The final column shows the middle 80% of average daytime highs recorded for that month in individual years; a wider range means conditions have varied more from one year to another.
The evidence behind this page
Where these figures
come from.
- Place identity
- GeoNames 4350635
- NOAA station
- USW00093784 · MARYLAND SCI CTR
- Station distance
- 10.5 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 21 usable years
- Daylight
- Calculated from latitude 39.27°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Sea temperature
- NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 35 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Catonsville is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
How travel partnerships will work