The Diocese of Rochester has launched the 2025-2026 Catholic Ministries Appeal (CMA). The purpose of the CMA is unchanged after more than 40 years. We are responsible for continuing the Church’s mission through good times and bad – through prosperous times and lean times. People are still poor, hungry, in need of pastoral care, education and employment. The faithful are in need of ministry and a vibrant parish life. Our youth and young adults are yearning to learn and grow in their relationship with Christ. The Church and our Diocese are in need of trained and educated seminarians, deacons, and pastoral leaders to lead our Church into the future. Our parishes need cost effective support for their technology and staff needs. We are called to meet all these needs

St. Catherine's goal is $117000 and Transfiguration's 2025/2026 goal is $200,000. To make your contribution to the Catholic Ministries Appeal, click HERE. Remember that St, Catherine is Parish 277 and Transfiguration is Parish 336.


NEW YEARS DAY

Mass will be celebrated at

10 am at St. Catherine of Siena


All of our Advent and Christmas activities and Mass schedules are on one page for your convenience!  Click HERE   


Mass Times

Whether you are a newcomer, a visitor, or a long-time parishioner, we warmly welcome you to join us for Mass. Feel free to attend any of our Masses and be sure to greet us when you do!

Church of the Transfiguration


Saturday | 4:00pm

Sunday | 8:45am*


Monday | 6:45am

Wednesday | 6:45am

*Services offered through Livestream

St. Catherine

of Siena Church


Saturday | 5:30pm

Sunday | 10:45am*


Tuesday | 9:00am

Thursday | 9:00am

*Services offered through Livestream

Welcome, we are so glad you are here.



We see ourselves as a unique expression of the People of God whose faith in Jesus Christ is rooted in the Roman Catholic tradition. We invite you to join us in worship, service and play.

BECOME A MEMBER UPDATE REGISTRATION

Below is the welcome video for the two clustered parishes - St. Catherine of Siena in Mendon and the Church of the Transfiguration in Pittsford.

Watch Video

Our Mission

We, St. Catherine of Siena and  the Church of the Transfiguration, are a vibrant Roman Catholic faith community committed to welcoming all. Rooted in the teachings of Jesus and guided by the Holy Spirit, we care for each other and provide faith and spiritual formation and development for all ages.
We live this out by advocating for peace, nonviolence, social justice, and providing opportunities for social ministry outreach.

Father Rob's Weekly Message

December 23, 2025
Dear Friends, I hope you and your loved ones had a beautiful Christmas celebration and continue to experience joy during these 12 days of Christmas through the Epiphany of our Lord. This week we celebrate the Feast of the Holy Family of Jesus, Mary and Joseph. What memories do you have of your childhood and the challenges your family faced? What memories and traditions might you be creating with your children over the holidays and every day? I thought you would enjoy this reflection from Fr. John Muir on his family, the Holy Family and perhaps your family. When I was ten, my dad gathered our family around the table in small-town Vermont and told us we were moving to the big desert city of Phoenix, Arizona. We were leaving behind family, friends, and everything familiar. None of us knew what to expect. But something beautiful happened. As we made the move together, our family grew closer. In retrospect, I’m amazed at my parents’ courage to go on that adventure. Even as a kid I realized our family found, in that challenge, a deeper unity and mutual love. In today’s Gospel, Joseph is told: “Rise, take the child and his mother, and flee…” (Matthew 2:13, 20). First to Egypt, then later to Israel. The Holy Family is frequently challenged to move and change, to adapt to God’s will for them, in order to find safety in the midst of threat. It’s not just an idiosyncratic story about survival. It’s a spiritual pattern for all of us. Every Christian family is called to be a kind of sanctuary, especially in a world full of noise, busyness, and fear. May I make a practical application for us? The Lord’s Day, Sunday, is perhaps the most practical way we imitate this dynamic we see in Joseph and his family. Sunday is not meant to be just like every other day, filled with errands and stress. It’s meant to be a day set apart; a holy “escape” into rest, worship, joy, and peace. A day to rise, take your family, and flee, into God’s presence. — Father John Muir ©LPi May we all flee into God’s presence at Mass, whether it is the weekday or weekend. I wish all of you a happy and healthy New Year. Blessings, Fr. Rob
December 17, 2025
MERRY CHRISTMAS! We all pray that your Advent has been full of faith and HOPE , and that you have found PEACE along the way despite the busy pace of the season. We are filled with JOY from being your staff members, and LOVE working with each other and serving the needs of our parishioners and our community. May the joy and wonder of Christmas be with you all year. We wish everyone a happy and healthy 2026. God Bless! Rob, Mike, Jeff, Margie, Eric, Ben, Anne, Shauna, Bob, Dan, Meg, Karen, Pam, Katie, Nancy and Sue
December 8, 2025
Dear Friends, The third weekend of Advent is referred to as Gaudete Sunday! This Sunday is a day of rejoicing within the penitential season of Advent, named from the Latin word for “rejoice.” Our celebration will be marked with the lighting of the pink candle on our Advent wreath, which signifies a foretaste of the joy of Christ’s coming at Christmas and His second coming. The day’s readings and themes emphasize hope and joyful anticipation, even amidst life’s challenges. Isaiah the great prophet sets out our hope in the one who is coming. James counsels patience in the face of delay, offering us a spirit of waiting and expectation. Matthew proclaims how John the Baptizer is praised by Jesus for his way of life and focus on the message of God, which allowed him to be seen as the forerunner of Jesus’ own message. Our beautiful season of Advent is coming soon to a close. May we all take time amid all we have to do and want to do to prepare for acknowledging the true meaning of Christmas. I know I must remind myself, like each of you, to take a breath with all the demands upon us and center on the birth of our Lord. I look forward to celebrating with you these last days of Advent and the Christmas season! Blessings, Father Rob
December 3, 2025
Dear Friends, I still have a handwritten calendar. I have an iPhone that I still could learn about its functions. I still have deadlines that come at me quickly, particularly this time of year from bulletin publishers and others. I never wanted to be a proofreader. As a Staff, everyone is given the opportunity to proofread the communication that is forthcoming from our office, me included. Oh, I cringe at that task. So, I was ahead of myself by a week and didn’t catch it (nor did any proofreaders) that I was ahead of myself with last week’s bulletin, parish email, etc. It’s Advent. I love this liturgical season and I try to slow down, encourage others to do the same in the midst of what these four weeks ( if actually we get a full four weeks) to just “be” and prepare for what is most essential, the celebration and recognition of what it means to have the Son of God come into our midst. With deadlines, and other responsibilities, I said I wasn’t going to be with you the First Sunday of Advent. Update, I was and I am not with you this Second Sunday of Advent. This weekend we focus on peace. I need it. I’m going to go all out and think you need it as well. Yes, the Peace of Christ that brings to the world relational peace to all. SO, please bear with me and I will repeat what I shared in the last bulletin. “This very weekend I will be presiding at the funeral of my dear friend, “brother,” Jerry Koen. Friends and family will gather at Saint Mary Star of the Sea in Beverly, Massachusetts. This is where I met Jerry, his beloved wife, Sally, and their five sons in 1981. God blessed us with forty plus years of friendship, being family to one another and all those moments every family experiences. These days and years have all gone by too quickly for me. They are filled with gifts of love that I will be ever grateful for today and for as long as I might live. Many years ago, a very dear friend gifted me with a book I have never forgotten. It is entitled, “The Precious Present.” It is a good reminder along with this weekend’s scriptures (Week Two is as relevant as Week One was) to keep ourselves focused and present to the precious present of this day. Jerry and Sally have given me this even having me “live in their home” (me casa, su casa) for decades. They and our faith in Jesus have blessed us to know our eternal home is where one day we shall reside forever. God’s peace to you Jerry as you are now reunited with Sally. Thank you for all your love.” Once in a while some things are worth repeating. I hope those of you who are reading this message understand my repetition. Love does bear repeating when you have been blessed by unbelievable people in your life. I am blessed. You are too! Father Rob
November 24, 2025
Dear Friends, This very weekend we begin with one another a new liturgical year with the Season of Advent! Our themes traditionally celebrated each Sunday of Advent are Hope, Peace, Joy and Love! This Sunday we focus on Hope anticipating Jesus’s coming and the hope he provides. The readings call out to us to be ready to meet the Lord! He may come when we least expect so let’s not put off to tomorrow what we should be addressing today! Most of us express how quickly time passes and certainly these four weeks of Advent will pass all too quickly (at least for me ) and Christmas Day will be right before us. Our days are shorter, and night comes before us so fast. Let us acknowledge this time of change, a new season of Advent, and the Christmas Season around the corner not miss what we have right before us in the present moment. May we pace ourselves, best we can, to appreciate the prayerfulness and wonder of these Advent days. All parishioners should have received by now a postcard from your Staff highlighting Advent opportunities being offered by our parishes. I hope you can take advantage as many of these sacred moments possible to make these days blessed in your journey to the birthday of our Lord. So, we begin on a note of Hope! The next three weekends we will reflect on the Peace of Christ that that brings to the world relational peace to all, Joy focusing on the birth of Jesus, and Love, centering on God’s love for all humanity and our responsibility to show love to others. I will be away this first Sunday of Advent. This very weekend I will be presiding at the funeral of my dear friend, “brother”, Jerry Koen. Friends and family will gather at Saint Mary Star of the Sea Parish in Beverly, Massachusetts. This is where I met Jerry, his beloved wife Sally, and five sons in 1981. God blessed us with forty plus years of friendship, being family to one another and all those moments every family experiences. Like my reflection above about Advent, these days and years have all gone by too quickly for me. They are filled with gifts of love that I will be ever grateful for today and for as long as I might live. Many years ago, another very dear friend gifted me with a book I have never forgotten. It is entitled, “The Precious Present.” It is a good reminder along with this weekend’s scriptures to keep ourselves focused and present to the precious present of this very day. Jerry and Sally have given me this even having me “live in their home” (mi casa, su casa) for decades. They and our faith in Jesus have blessed us to know our eternal home is where one day we shall reside forever. God’s peace to you Jerry as you are now reunited with Sally. Thank you for all your love. Friends, enjoy your “Precious Present”. Blessings, Father Rob
November 18, 2025
Dear Friends, This weekend we celebrate the last Sunday of the liturgical year. Our masses come together to acknowledge Our Lord Jesus Christ, King of the Universe. The sacred texts for this feast begin with 2 Samuel and in Hebron, David being hailed as the king of all the tribes of Israel. In the Gospel of Luke, Jesus is anointed king on the wood of the cross, a sign of paradox, of defeat yet final victory. Through his cross we have passed from darkness into the kingdom of light. Within this text we meet the “good thief.” He recognizes the innocence of Jesus and moves from his own personal darkness to the welcoming kingdom of light Jesus offers. Jesus assures this “good thief” that he will be with him in paradise. Reflecting on the scriptures and particularly the Gospel, let us rejoice and have the same boundless confidence of the good thief, even in the face of our own sins and weaknesses. If our response to Christ is receptive, humble, and repentant, then we will not hesitate to seek his mercy and forgiveness so that we, too, might come to share his glory in paradise! This Thursday, November 27th is our Thanksgiving Day. We will celebrate mass at 10 AM at Saint Catherine of Siena this year. Perhaps we might consider and pray these few days before Thanksgiving to set aside deeds of charity and pray for economic justice for all our sisters and brothers. Let’s make time on Thanksgiving to come together and thank the Lord for all our blessings. Please know I conclude you in my blessings and prayers, Father Rob

Parish Bulletin

At our Parish Community, our bulletins are your go-to source for the latest news, events, and inspiration. Each week, we share important updates, spiritual reflections, and opportunities to connect with our vibrant community. Stay informed and engaged with us!

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